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For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
---------------------------------------------------

Stagecraft Digest, Issue #682

 1. Re: Come on you lime operators!
    by Herrick Goldman <Herrick [at] HGLightingDesign.com>
 2. Super Bowl and Stones
    by "Ken" <holyoak1 [at] comcast.net>
 3. Re: Come on you lime operators!
    by "Stephen E. Rees" <Rees [at] fredonia.edu>
 4. Re: Job titles
    by "Idaho Scenic and Rigging" <idahoscenic [at] cableone.net>
 5. Re: Good news: Blue Light Makes People Alert at Night
    by Dorian Kelly <dorian [at] essex.ac.uk>
 6. Re: Job titles
    by "Jeffrey E. Salzberg" <stagecraft [at] jeffsalzberg.com>
 7. Re: Good news: Blue Light Makes People Alert at Night
    by "Jon Ares" <jonares [at] hevanet.com>
 8. Re: Good news: Blue Light Makes People Alert at Night
    by Noemi Ybarra <noemi [at] jonesphillips.com>
 9. Re: I saw something beautiful last night
    by Noemi Ybarra <noemi [at] jonesphillips.com>
10. Re: Super bowl halftime show.
    by "Alf Sauve" <alf.sauve [at] mindspring.com>
11. Re: Super bowl halftime show.
    by IAEG [at] aol.com
12. ERS Optics
    by Stephen Litterst <slitterst [at] ithaca.edu>
13. Re: ERS Optics
    by "Paul Schreiner" <pschreiner [at] rmwc.edu>
14. Re: ERS Optics
    by "G. D. George" <ggeorge [at] capital.edu>
15. Re: AHJ and fire
    by Noemi Ybarra <noemi [at] jonesphillips.com>
16. Re: Job titles
    by "Missy Hukill '03" <mhukill [at] elmira.edu>
17. Re: ERS Optics
    by "Curtis L. Mortimore" <clmortimore [at] bsu.edu>
18. Re: tech rider
    by FrankWood95 [at] aol.com
19. Re: ERS Optics
    by Stephen Litterst <slitterst [at] ithaca.edu>
20. Re: Super Bowl and Stones
    by FrankWood95 [at] aol.com
21. cable drums?
    by "Fred Schoening, Jr." <bigfred [at] mindspring.com>
22. Re: Good news: Blue Light Makes People Alert at Night
    by FrankWood95 [at] aol.com
23. Re: ERS Optics
    by Stephen Litterst <slitterst [at] ithaca.edu>
24. Re: cable drums?
    by Richard Wolpert <richw [at] unionconnector.com>
25. Re: ERS Optics
    by "Stephen E. Rees" <Rees [at] fredonia.edu>
26. Re: Good news: Blue Light Makes People Alert at Night
    by Jerry Durand <jdurand [at] interstellar.com>
27. Re: Super bowl halftime show.
    by Herrick Goldman <Herrick [at] HGLightingDesign.com>
28. Re: ERS Optics
    by FrankWood95 [at] aol.com
29. Re: ERS Optics
    by Stephen Litterst <slitterst [at] ithaca.edu>
30. Re: ERS Optics
    by FrankWood95 [at] aol.com
31. Re: ERS Optics
    by FrankWood95 [at] aol.com
32. Re: cable drums?
    by Bill Sapsis <bill [at] sapsis-rigging.com>
33. Re: ERS Optics
    by "dale" <dale [at] cybercom.net>
34. Re: ERS Optics
    by Stephen Litterst <slitterst [at] ithaca.edu>
35. Re: ERS Optics
    by FrankWood95 [at] aol.com
36. Re: ERS Optics
    by "Cyr, Dale" <Dale.Cyr [at] getronics.com>
37. Re: ERS Optics
    by Herrick Goldman <Herrick [at] HGLightingDesign.com>
38. Re: ERS Optics
    by "Idaho Scenic and Rigging" <idahoscenic [at] cableone.net>
39. Re: ERS Optics
    by Ken Romaine <ken.stagecraft [at] gmail.com>
40. Re: Super bowl halftime show
    by CB <psyd [at] cox.net>
41. Re: ERS Optics
    by "Paul Schreiner" <pschreiner [at] rmwc.edu>
42. Re: Super bowl halftime show
    by CB <psyd [at] cox.net>
43. Re: Job titles
    by CB <psyd [at] cox.net>
44. Re: Super bowl halftime show
    by Richard Keith <keith.78 [at] osu.edu>
45. Re: Job titles
    by "Jeffrey E. Salzberg" <stagecraft [at] jeffsalzberg.com>
46. Re: Super bowl halftime show
    by IAEG [at] aol.com
47. Re: ERS Optics
    by "G. D. George" <ggeorge [at] capital.edu>
48. Re: ERS Optics
    by Herrick Goldman <Herrick [at] HGLightingDesign.com>
49. Re: ERS Optics
    by IAEG [at] aol.com
50. Re: ERS Optics
    by "Jeffrey E. Salzberg" <stagecraft [at] jeffsalzberg.com>
51. Football Fields
    by Brian James <brianedwardjames [at] gmail.com>
52. Re: Football Fields
    by iaeg [at] aol.com
53. Re: Super bowl halftime show.
    by "ladesigners [at] juno.com" <ladesigners [at] juno.com>
54. Re: ERS Optics
    by "ladesigners [at] juno.com" <ladesigners [at] juno.com>
55. Re: Football Fields
    by Mike Brubaker <mdbrubaker [at] insightbb.com>
56. Re: Super bowl halftime show
    by Jim Hyslop <theatre [at] dreampossible.ca>
57. Re: ERS Optics
    by IAEG [at] aol.com
58. Re: ERS Optics
    by FrankWood95 [at] aol.com
59. Re: ERS Optics
    by FrankWood95 [at] aol.com
60. Re: ERS Optics
    by "ladesigners [at] juno.com" <ladesigners [at] juno.com>
61. Re: ERS Optics
    by FrankWood95 [at] aol.com
62. Re: AHJ and fire
    by "Laura McMeley" <LMcMeley [at] msn.com>
63. Re: ERS Optics
    by FrankWood95 [at] aol.com
64. Clear Horses or Unicorns
    by "Stephen E. Rees" <Rees [at] fredonia.edu>
65. Re: Clear Horses or Unicorns
    by IAEG [at] aol.com
66. CT
    by IAEG [at] aol.com
67. Re: ERS Optics
    by FrankWood95 [at] aol.com
68. Re: ERS Optics
    by Herrick Goldman <Herrick [at] HGLightingDesign.com>
69. Re: CT
    by "ladesigners [at] juno.com" <ladesigners [at] juno.com>
70. Re: CT
    by Herrick Goldman <Herrick [at] HGLightingDesign.com>
71. Re: CT
    by Herrick Goldman <Herrick [at] HGLightingDesign.com>
72. Re: ERS Optics
    by "ladesigners [at] juno.com" <ladesigners [at] juno.com>
73. Re: CT
    by IAEG [at] aol.com
74. Re: Clear Horses or Unicorns
    by "JUSTIN DAVID BENNETT" <jbennett43 [at] mail.accd.edu>
75. Re: Super bowl halftime show
    by Dale Farmer <dale [at] cybercom.net>
76. Re: Football Fields
    by Dale Farmer <dale [at] cybercom.net>
77. Re: Football Fields
    by Brian James <brianedwardjames [at] gmail.com>
78. Counter Weighjt Systems
    by Brian James <brianedwardjames [at] gmail.com>
79. Re: ERS Optics
    by "Curtis L. Mortimore" <clmortimore [at] bsu.edu>
80. Re: CT
    by Dale Farmer <dale [at] cybercom.net>
81. Re: CT
    by IAEG [at] aol.com
82. Re: ERS Optics
    by Jerry Durand <jdurand [at] interstellar.com>
83. Re: Counter Weighjt Systems
    by "Peter Scheu" <peter [at] scheuconsulting.com>
84. Re: ERS Optics
    by "Bill Nelson" <billn [at] peak.org>

*** Please update the subject line of your reply to use the subject
*** line of the message you are replying to! Please only reply to
*** one message subject in each reply.

----------------------------------------------------------------------

Date: Tue, 07 Feb 2006 07:16:09 -0500
Subject: Re: Come on you lime operators!
From: Herrick Goldman <Herrick [at] HGLightingDesign.com>
Message-ID: <C00DF9B9.AE81%Herrick [at] HGLightingDesign.com>
In-Reply-To: <list-27382943 [at] prxy.net>

Well It would be nice if she obeyed the laws of physics!!!

What! No Iris?


On 2/7/06 4:42 AM, "Dorian Kelly" <dorian [at] essex.ac.uk> wrote:

> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
> 
> heres a game to play For all those hotshot followspot  operators out
> there, try your hand at this- and see how good you really are.....
> 
> http://www.laplandmusic.net/Lyric/game.html
> 
> PS Nights at the Circus at the Lyric Hammersmith London is unmissable.
> 

-- 
Herrick Goldman
Lighting Designer, NYC
www.HGLightingDesign.com
917-797-3624
"To the scores of silent alchemists who wreak their joy in darkness and in
light bringing magic to life, we bow most humbly. "-CDS



------------------------------

From: "Ken" <holyoak1 [at] comcast.net>
Cc: bigfred [at] mindspring.com ('Fred Schoening, Jr.')
Subject: Super Bowl and Stones
Date: Tue, 7 Feb 2006 08:20:11 -0500
Message-ID: <002201c62be9$39bc3d90$0400a8c0 [at] COMPAQ>
In-Reply-To: <list-27378140 [at] prxy.net>


My first thought was the same as I had at my 40th HS Reunion -

Where did all the old people come from??


------------------------------

Message-ID: <43E8A3AA.4060405 [at] fredonia.edu>
Date: Tue, 07 Feb 2006 08:42:02 -0500
From: "Stephen E. Rees" <Rees [at] fredonia.edu>
Reply-To:  Rees [at] fredonia.edu
Subject: Re: Come on you lime operators!
References: <list-27386178 [at] prxy.net>

Yeah, and apparently no fall protection or net either! ;)
Steve

Herrick Goldman wrote:

> Well It would be nice if she obeyed the laws of physics!!!
> 
> What! No Iris?


------------------------------

Message-ID: <001301c62bf1$7690ed80$6401a8c0 [at] amd2200>
From: "Idaho Scenic and Rigging" <idahoscenic [at] cableone.net>
References: <list-27363831 [at] prxy.net> <list-27379645 [at] prxy.net>
Subject: Re: Job titles
Date: Tue, 7 Feb 2006 07:19:09 -0700

If you're serious about making them, then I won't.
I have two hundred blank black Beefy T's just waiting.

Robert Riddle
Will Disagree for the Sake of Discussion
Will Discuss for the Sake of Learning


----- Original Message ----- 
From: "Bill Nelson" <billn [at] peak.org>
To: "Stagecraft" <stagecraft [at] theatrical.net>
Sent: Monday, February 06, 2006 11:57 PM
Subject: Re: Job titles


> For info, archives & UNSUBSCRIBE, see
<http://stagecraft.theprices.net/>
> ---------------------------------------------------
>
> >>"I don't know everything, but I'm the world's leading expert on the
way I
> >>want things done."
> >
> > Soon to be coming to a theatre near you, mumbled by a certain
loudmouth
> > sound guy who shall not be named.  Love it, stealing it, making
> > t-shirts...
>
> When you get them made, I want two.
>
> Bill
>


------------------------------

Message-Id: <a06230903c00e59ecf999 [at] [155.245.53.126]>
In-Reply-To: <list-27379828 [at] prxy.net>
References: <list-27322789 [at] prxy.net> <list-27355261 [at] prxy.net>   
 <list-27360212 [at] prxy.net> <list-27360462 [at] prxy.net> <list-27379828 [at] prxy.net>
Date: Tue, 7 Feb 2006 14:19:07 +0000
From: Dorian Kelly <dorian [at] essex.ac.uk>
Subject: Re: Good news: Blue Light Makes People Alert at Night

>
>Blue light destroys night vision - so is really the wrong color in a
>vehicle. Red light is proper, and is what you find in aircraft for
>nighttime flights. All the navigation stations in the sailboats I used to
>charter also had red work lights.


Interesting this, the effects that coloured light has retinally 
speaking. One of the great secrets that I learned about how to do a 
really excellent black theatre ( that's the one where black hooded 
robed people wander around invisibly moving stuff around magically 
under UV light) works so much better when there are some red lamps 
surrounding the scene.  The illusionist Omar Pasha for example has a 
free standing prosc arch with  dark red 40 watt GLS at foot 
intervals, and I guarantee that when they are on all greyscale 
detail vanishes, because the eye cannot do dark adaptation.

As for blue, there is so much energy in blue leds that every time I 
go to the movies I complain that the step lighting in my peripheral 
vision is destroying my ability to see the screen properly

Dorian

------------------------------

Reply-To: <stagecraft [at] jeffsalzberg.com>
From: "Jeffrey E. Salzberg" <stagecraft [at] jeffsalzberg.com>
Subject: RE: Job titles
Date: Tue, 7 Feb 2006 09:27:01 -0500
Message-ID: <002001c62bf2$8f5a5620$6501a8c0 [at] Dell>
In-Reply-To: <list-27388827 [at] prxy.net>

 
> If you're serious about making them, then I won't.
> I have two hundred blank black Beefy T's just waiting.

Well, needless to say, I want one, whoever makes them.


------------------------------

Message-ID: <000701c62bfb$221895a0$0600000a [at] BRUTUS>
From: "Jon Ares" <jonares [at] hevanet.com>
References: <list-27322789 [at] prxy.net> <list-27355261 [at] prxy.net>    <list-27360212 [at] prxy.net> <list-27360462 [at] prxy.net> <list-27379828 [at] prxy.net>
Subject: Re: Good news: Blue Light Makes People Alert at Night
Date: Tue, 7 Feb 2006 07:28:23 -0800

> Blue light destroys night vision - so is really the wrong color in a
> vehicle. Red light is proper, and is what you find in aircraft for
> nighttime flights.

My previous truck (Toyota Tacoma) also had all red and amber 
instrumentation.  I wanted to replace the factory stereo, but all 3rd party 
stereos are an obnoxious amalgamation of blue and green, and other 
flashing/dancing LEDs now.  I just couldn't bring myself to sticking a 
bright blue stereo in my dash, when everything else looked so nice.  Looking 
at all these blue stereos, I couldn't help but wonder if the VWs had had 
that much impact on the market - that it isn't cool unless it's blue....

     - Jon Ares
www.hevanet.com/acreative 


------------------------------

Message-ID: <43E8BF66.8EB334D3 [at] jonesphillips.com>
Date: Tue, 07 Feb 2006 10:40:22 -0500
From: Noemi Ybarra <noemi [at] jonesphillips.com>
Subject: Re: Good news: Blue Light Makes People Alert at Night
References: <list-27322789 [at] prxy.net> <list-27355261 [at] prxy.net>
	    <list-27360212 [at] prxy.net> <list-27360462 [at] prxy.net> <list-27379828 [at] prxy.net>

Bill Nelson wrote:

> Blue light destroys night vision - so is really the wrong color in a
> vehicle. Red light is proper, and is what you find in aircraft for
> nighttime flights. All the navigation stations in the sailboats I used to
> charter also had red work lights.

But is it night vision you need while driving, with headlights on?  I find
that I see better at night with my interior lights on - my eyes don't have to
keep adjusting between a dark interior and the light cast by the headlights.

The interior light also helps me stay awake.

Noemi

--
Jones & Phillips Associates, Inc.
http://www.jonesphillips.com
301 North 5th Street
Lafayette, Indiana 47901
765-423-1123 (Voice)
765-742-4013 (Fax)



------------------------------

Message-ID: <43E8C4B6.952496EE [at] jonesphillips.com>
Date: Tue, 07 Feb 2006 11:03:02 -0500
From: Noemi Ybarra <noemi [at] jonesphillips.com>
Subject: Re: I saw something beautiful last night
References: <list-26539648 [at] prxy.net>

Chris, thanks for telling it.  What a great memory!

I'll save this one for those times I wonder why I'm even in this business.

Noemi

CB wrote:

> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
>
> >Chris - do tell.
>
> *sigh*...  It was a friend in the industry's birthday party, 'All' (from
> the Descendents) headlined, a few local bands opened, and one of the bands
> that I toured with offered up their guitarist and lead singer to do an
> 'unplugged' set.  Their road manager, and close friend of mine, also showed
> up at the party, which might have been an issue if they hadn't already been
> on stage, because they had been spatting for the previous three months.
> The guys started into 'Ole Fifty-five' (Tom Waits song, covered by the
> Eagles), a song that the manager sang excellent harmonies on.  I stuffed a
> wireless in his face, he refused, I insisted, he refused again, I gave him
> the "What is this, high school?" look, and he started singing.  As he
> stolled through the crowd on his way to the stage, the looks of incredulity
> on the faces of the guys as I dialled him up in the monitor were priceless.
>  The looks that were exchanged as he took a chair between them on stage
> literally brought tears to my eyes, as, without a single word, an entire
> conversation took place with their eyes and expressions.  The smiles that
> they adopted as they finished the song needed no interpretation, as three
> friends left their animosity behind, and realised that their friendship was
> far more important than whatever it was that they were fighting about in
> the firs place.
> And that's when the cops showed up.  Right in the middle of two acoustic
> guitars accompanying three voices harmonizing beautifully, and told me that
> I had to shut it down, as there had been a noise complaint.  After 'All', a
> power trio alterna-thrash band with 2300 Watts of stage power between the
> guit amp and the bass amp (not to mention what I had there) and a drummer
> with double-oilskin Evans heads and sticks so large that they should still
> have had bark on them.
> I refused.
> It was sooooo beautiful.
> If you're interested in the Tucson music scene (back when there was one)
> "High and Dry" is showing in Portland in the coming week, and 'Giant Sand'
> will be playing, along with an old Tucsonan's new band.
> <http://www.upstairsfilm.com/highanddry/news.html>
>                                 Chris "Chris" Babbie
>                                 Location Sound
>                                 MON AZ
>
> Delete key training and post trimming done by appointment.  Rates
> negotiable, will trade for typing lessons/ADD treatment...


------------------------------

Message-ID: <068301c62c0a$ab843060$6501a8c0 [at] ALFOFFICE>
Reply-To: "Alf Sauve" <alf [at] sauve.org>
From: "Alf Sauve" <alf.sauve [at] mindspring.com>
Subject: Re: Super bowl halftime show.
Date: Tue, 7 Feb 2006 12:19:20 -0500

I can't believe nobody has mentioned the Aleve commercial.  (Which you can 
see at Aleve.com) I'm starting to
 relate.

 What impressed me about the sound was that it WAS 'live'.

 Alf


> ----- Original Message ----- 
> From: "Delbert Hall" <delbert.hall [at] gmail.com>
> To: "Stagecraft" <stagecraft [at] theatrical.net>
> Sent: Monday, February 06, 2006 4:14 PM
> Subject: Re: Super bowl halftime show.
>
>
> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
>
> You can watch the Superbowl commercials online at www.adage.com.
>
> -Delbert
>
> --
> Delbert L. Hall
> ZFX Flying Director
> Phone: 714-585-7070
> 


------------------------------

From: IAEG [at] aol.com
Message-ID: <294.51319c3.311a31d7 [at] aol.com>
Date: Tue, 7 Feb 2006 12:24:39 EST
Subject: Re: Super bowl halftime show.


In a message dated 2/7/06 12:22:23 PM, alf.sauve [at] mindspring.com writes:

<<  What impressed me about the sound was that it WAS 'live'.


 Alf >>

yep, , , they weren't lip syncing, , that's for certain, , 

but "live" doesn't have to be "bad"  which it was, , 

I wonder what the buzz is at ABC this week about how audio from the field 
sounded, , ,   anyone with any insight there ? 

very best,

Keith Arsenault

IAEG -  International Arts & Entertainment Group 
Tampa, Florida

------------------------------

Date: Tue, 07 Feb 2006 11:35:09 -0500
From: Stephen Litterst <slitterst [at] ithaca.edu>
Subject: ERS Optics
Message-id: <43E8CC3D.4010709 [at] ithaca.edu>

Here's a question for the physicists and opticians out there --

What is it that causes the shutter and/or gobo image in an Ellipsoidal 
Reflector Spotlight to invert?

I have always been taught and told that it's the secondary focal point 
of the reflector.  Which makes sense, until I look through the lens and 
find that the lens does it as well.  So if both the secondary focal 
point and the lens invert the image, shouldn't the image come out normally?

All the textbooks I have collected do not show the lens inverting the 
image.  However, grabbing a lens tube from a Source4 and a 360Q and 
looking at them from the appropriate focal length shows the image inverted.

I was going to teach on this today, but maybe I'll postpone that part of 
the lecture until I know for sure.

Steve l.
-- 
Stephen Litterst
Technical Supervisor
Ithaca College, Theatre Arts
607.274.3947
slitterst [at] ithaca.edu

------------------------------

Subject: RE: ERS Optics
Date: Tue, 7 Feb 2006 13:01:18 -0500
Message-ID: <6E497ADB607656479C24E6D7BF6B505A042A9B1D [at] exchange.rmwc.edu>
From: "Paul Schreiner" <pschreiner [at] rmwc.edu>

> What is it that causes the shutter and/or gobo image in an=20
> Ellipsoidal=20
> Reflector Spotlight to invert?
>=20
> I have always been taught and told that it's the secondary=20
> focal point=20
> of the reflector.  Which makes sense, until I look through=20
> the lens and=20
> find that the lens does it as well.  So if both the secondary focal=20
> point and the lens invert the image, shouldn't the image come=20
> out normally?

The shutters and/or gobos sit at a point very close to (and usually,
IIRC, just "DS" of) the reflector's second focal point (which, if you
recall, is also the first focal point of the lens).  When the light
passes through the lens and then through the focal point on the other
side, that's when the inversion happens.

Or at least that's how I explain it in class! :)

------------------------------

From: "G. D. George" <ggeorge [at] capital.edu>
Subject: RE: ERS Optics
Date: Tue, 7 Feb 2006 13:04:40 -0500
In-Reply-To: <list-27393895 [at] prxy.net>
Message-ID: <MALFRONT2bXCH5n00ze0000008f [at] malfront.capital.edu>

I *thought* that the gobo sat at the focal point and thus beam convergence
reversed the image.  Upon reflection, though (pun intended), all that that
situation would do is create a hotspot on the gobo. I drew it out, and what
I *think* happens is that the gobo must actually sit at a point in front of
the primary focal point where the beam spread is sufficient to project the
entire image.  The image is then reversed at the secondary focal point, in
front of the light. I don't have a text handy, but will look when I get over
to the theatre.

Jerry


G. D. George
Assistant Professor and Technical Director
Capital University Theatre
Department of Communications
1 College and Main
Columbus, OH 43209

(614) 236-6498
ggeorge [at] capital.edu	

-----Original Message-----
From: Stagecraft [mailto:stagecraft [at] theatrical.net] On Behalf Of Stephen
Litterst
Sent: Tuesday, February 07, 2006 11:35 AM
To: Stagecraft
Subject: ERS Optics

For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
---------------------------------------------------

Here's a question for the physicists and opticians out there --

What is it that causes the shutter and/or gobo image in an Ellipsoidal 
Reflector Spotlight to invert?

I have always been taught and told that it's the secondary focal point 
of the reflector.  Which makes sense, until I look through the lens and 
find that the lens does it as well.  So if both the secondary focal 
point and the lens invert the image, shouldn't the image come out normally?

All the textbooks I have collected do not show the lens inverting the 
image.  However, grabbing a lens tube from a Source4 and a 360Q and 
looking at them from the appropriate focal length shows the image inverted.

I was going to teach on this today, but maybe I'll postpone that part of 
the lecture until I know for sure.

Steve l.
-- 
Stephen Litterst
Technical Supervisor
Ithaca College, Theatre Arts
607.274.3947
slitterst [at] ithaca.edu




------------------------------

Message-ID: <43E8E05B.20025F2A [at] jonesphillips.com>
Date: Tue, 07 Feb 2006 13:00:59 -0500
From: Noemi Ybarra <noemi [at] jonesphillips.com>
Subject: Re: AHJ and fire
References: <list-26893019 [at] prxy.net>

Someone, somewhere (perhaps on this list?) told a story about how he had
involved the local firefighters/rescue folks in his theater.  He offered
them the chance to use it for rescue practice - rapelling from beams,
climbing, etc.  They conducted regular exercises in the theater, a
benefit to the agency.  It also benefitted the theater in a couple ways
- the emergency folks got to know where it was, where the entrances
were, and what the inside of the building looked like.  It also went a
long way toward fostering goodwill.

Noemi Ybarra

--
Jones & Phillips Associates, Inc.
http://www.jonesphillips.com
301 North 5th Street
Lafayette, Indiana 47901
765-423-1123 (Voice)
765-742-4013 (Fax)



------------------------------

Subject: RE: Job titles
Date: Tue, 7 Feb 2006 13:09:13 -0500
Message-ID: <8045B56E582D944783E6ECC0B67A8ECA0159A6A3 [at] exch2.elmira.edu>
From: "Missy Hukill '03" <mhukill [at] elmira.edu>
Cc: stagecraft [at] jeffsalzberg.com

=20
> If you're serious about making them, then I won't.
> I have two hundred blank black Beefy T's just waiting.

I'll take two.





Melissa Hukill=20
Performing Arts Production Manager
Elmira College
One Park Place
Elmira, NY 14901

------------------------------

Date: Tue, 07 Feb 2006 13:55:40 -0500
Subject: Re: ERS Optics
From: "Curtis L. Mortimore" <clmortimore [at] bsu.edu>
Message-ID: <C00E575C.408C%clmortimore [at] bsu.edu>
In-Reply-To: <list-27393895 [at] prxy.net>

Steve,

I=B9m still working out how to describe this but I=B9ll take a shot at it.
=20
Light is generated by a filament at the focal point of an elliptical
reflector. If the reflector were a complete ellipse the light would reflect
off the reflector, travel though the convergence point, hit the reflector a=
t
an equal and opposite point and reflect back through the second focal point=
.
The reflector in an ERS is only half of an ellipse and the second focal
point is somewhere in the middle of the lens arrangement. The lens(s),
instead of reflecting the light back toward the focal point, refracts it on
toward the smiling actors. All patterns, shutters, etc. are placed between
the first focal point(filament) and the point of convergence. The beam of
light, modified or not(color, pattern etc...), passes through the point of
convergence and into the lens arrangement upside-down and backwards. So the
end result is the light inverts at the point of convergence, NOT through th=
e
lenses.
=20
Does that make any sense?
Is it any kind of correct?

--=20
Curtis L. Mortimore
Technical Director
Ball State University
Department of Theatre and Dance
Muncie, IN 47306
<clmortimore [at] bsu.edu>



------------------------------

From: FrankWood95 [at] aol.com
Message-ID: <140.54a9ee81.311a4767 [at] aol.com>
Date: Tue, 7 Feb 2006 13:56:39 EST
Subject: Re: tech rider

In a message dated 07/02/06 07:20:50 GMT Standard Time, billn [at] peak.org writes:

> If there is current in the ground, then a system problem exists. The only
>  sound problems we have here are the same "ground loop" problems that exist
>  everywhere. That has nothing to do with how the power is fed to the main
>  distribution panel. It is a consequence of the resistance of the in-house
>  ground wiring.

There is often a small current. Some electronic equipment is fitted with 
small capacitors line to earth and neutral to earth, as are some domestic 
appliances. These need to be lifted before making leakage tests, which are between 
live and neutral in parallel and earth. It's the first test done by an automatic 
tester, and a failure aborts the whole test cycle. 


Frank Wood

------------------------------

Date: Tue, 07 Feb 2006 14:16:05 -0500
From: Stephen Litterst <slitterst [at] ithaca.edu>
Subject: Re: ERS Optics
In-reply-to: <list-27395968 [at] prxy.net>
Message-id: <43E8F1F5.9060308 [at] ithaca.edu>
References: <list-27395968 [at] prxy.net>

Curtis L. Mortimore wrote:
> ---------------------------------------------------
  > Light is generated by a filament at the focal point of an elliptical
> reflector. If the reflector were a complete ellipse the light would reflect
> off the reflector, travel though the convergence point, hit the reflector at
> an equal and opposite point and reflect back through the second focal point.
> The reflector in an ERS is only half of an ellipse and the second focal
> point is somewhere in the middle of the lens arrangement. The lens(s),
> instead of reflecting the light back toward the focal point, refracts it on
> toward the smiling actors. All patterns, shutters, etc. are placed between
> the first focal point(filament) and the point of convergence. The beam of
> light, modified or not(color, pattern etc...), passes through the point of
> convergence and into the lens arrangement upside-down and backwards. So the
> end result is the light inverts at the point of convergence, NOT through the
> lenses.
>  
> Does that make any sense?

That makes sense.  That is always what I have been told.  I would 
counter this with an experiment:

Find the focal length of your lens and look through it from that focal 
length.  The image is upside-down and backwards.  So if the reflector 
configuration causes the inverted image, the lens should undo the 
inversion, projecting images right-side up.  This is the source of my 
quandry.

My hypothesis is that the gate (shutter, gobo, etc) is beyond the 
secondary focal point so that the lens does the inversion itself.

Steve L.

-- 
Stephen Litterst
Technical Supervisor
Ithaca College, Theatre Arts
607.274.3947
slitterst [at] ithaca.edu

------------------------------

From: FrankWood95 [at] aol.com
Message-ID: <8a.35cb7544.311a4c50 [at] aol.com>
Date: Tue, 7 Feb 2006 14:17:36 EST
Subject: Re: Super Bowl and Stones

In a message dated 07/02/06 13:26:17 GMT Standard Time, holyoak1 [at] comcast.net 
writes:

> My first thought was the same as I had at my 40th HS Reunion -
>  
>  Where did all the old people come from??

I know the feeling. There were eight of us who were close friends at 
university, living in the same hall of residence, and drinking coffee in each others' 
rooms of an evening. Oddly enough, only one of us followed the subject of his 
degree. One of the engineers taught mathematics, another is now a pig farmer, 
a third was secretary of a County cricket club, a fourth a TV cameraman, and a 
fifth re-qualified as a doctor. The pharmacist was an undertaker, it being 
the family business, and the physicist was a TV engineer. One last engineer 
stayed in the profession, and when he retired went walking through South America. 
He is now walking through Tasmania.

Sadly, we lost two last year. Myself (I'm the physicist), I feel the magic 
'fourscore and ten' approaching, and in morbid moments wonder who is next.


Frank Wood

------------------------------

Message-ID: <32260874.1139340288019.JavaMail.root [at] mswamui-chipeau.atl.sa.earthlink.net>
Date: Tue, 7 Feb 2006 13:24:48 -0600 (GMT-06:00)
From: "Fred Schoening, Jr." <bigfred [at] mindspring.com>
Reply-To: "Fred Schoening, Jr." <bigfred [at] mindspring.com>
Subject: cable drums?

Hiya, Kids!

Who sells grooved drums for aircraft cable winches and 
the like in the US? So far my web searching hasn't come 
up with anything.

Thanks,

Fred

"Big Fred" Schoening
Technical Director, Dallas Theater Center
Dallas, Texas, USA

------------------------------

From: FrankWood95 [at] aol.com
Message-ID: <24a.67bcc4c.311a4e49 [at] aol.com>
Date: Tue, 7 Feb 2006 14:26:01 EST
Subject: Re: Good news: Blue Light Makes People Alert at Night

In a message dated 07/02/06 15:29:41 GMT Standard Time, jonares [at] hevanet.com 
writes:

> > Blue light destroys night vision - so is really the wrong color in a
>  > vehicle. Red light is proper, and is what you find in aircraft for
>  > nighttime flights.
>  
>  My previous truck (Toyota Tacoma) also had all red and amber 
>  instrumentation. 

A blue light is pretty well standard for the 'high beam' warning light. For 
all the rest, it depends on the designer's whim. Red lights, to me, say that 
there is a fault, or about to be. 


Frank Wood

------------------------------

Date: Tue, 07 Feb 2006 14:34:14 -0500
From: Stephen Litterst <slitterst [at] ithaca.edu>
Subject: Re: ERS Optics
In-reply-to: <list-27394656 [at] prxy.net>
Message-id: <43E8F636.6050106 [at] ithaca.edu>
References: <list-27394656 [at] prxy.net>

G. D. George wrote:
> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
> 
> I *thought* that the gobo sat at the focal point and thus beam convergence
> reversed the image.  Upon reflection, though (pun intended), all that that
> situation would do is create a hotspot on the gobo. I drew it out, and what
> I *think* happens is that the gobo must actually sit at a point in front of
> the primary focal point where the beam spread is sufficient to project the
> entire image.  The image is then reversed at the secondary focal point, in
> front of the light. I don't have a text handy, but will look when I get over
> to the theatre.

Watch out for texts, as they all have similar diagrams. (At least the 
three I've checked).  And none show the light rays inverting in the 
lens, which observation has shown to be true.

Based on that observation I'm fairly certain the gate (gobo and shutter 
magic) is *between* the secondary focal point and the lens.  Which is 
counter to what I've been taught (and what I've been teaching).

Without knowing a specific fixture contact at the major manufacturers, 
I've been talking with sales folk and tech service people who are very 
nice, but can't get into the detail I'd like to discuss.

Steve L.

-- 
Stephen Litterst
Technical Supervisor
Ithaca College, Theatre Arts
607.274.3947
slitterst [at] ithaca.edu

------------------------------

Date: Tue, 07 Feb 2006 14:49:20 -0500
From: Richard Wolpert <richw [at] unionconnector.com>
Subject: RE: cable drums?
In-reply-to: <list-27396820 [at] prxy.net>
Cc: bigfred [at] mindspring.com (Fred Schoening, Jr.)
Message-id: <KIEIJNECPAAGNDKNCFBHAEKFFFAA.richw [at] unionconnector.com>

Try www.conductix.com they make all sorts of power equipment AND cord reels.
Go to the bottom of their HOME page and click on Cord Reels.

Richard A.Wolpert
President
Union Connector Co., Inc.
40 Dale Street
West Babylon, NY  11704
Ph: 631-753-9550 ext. 204
Fx: 631-753-9560
richw [at] unionconnector.com

-----Original Message-----
From: Stagecraft [mailto:stagecraft [at] theatrical.net]On Behalf Of Fred
Schoening, Jr.
Sent: Tuesday, February 07, 2006 2:25 PM
To: Stagecraft
Subject: cable drums?

For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
---------------------------------------------------

Hiya, Kids!

Who sells grooved drums for aircraft cable winches and
the like in the US? So far my web searching hasn't come
up with anything.

Thanks,

Fred

"Big Fred" Schoening
Technical Director, Dallas Theater Center
Dallas, Texas, USA



------------------------------

Message-ID: <43E8F824.2060307 [at] fredonia.edu>
Date: Tue, 07 Feb 2006 14:42:28 -0500
From: "Stephen E. Rees" <Rees [at] fredonia.edu>
Reply-To:  Rees [at] fredonia.edu
Subject: Re: ERS Optics
References: <list-27393895 [at] prxy.net>

Steve,
If you can find a copy of Willard Bellman's 2nd edition, (Lighting the 
Stage, Art and Practice)there is a diagram of this process on the bottom 
of page 84.  The inverted image is the result of the effects of 
reflector, principal focal point which is just in front of the conjugal 
focal point where the template is and the refraction in objective lens 
system.

HTH<
The Other Upstate Steve

Stephen Litterst wrote:
> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
> 
> Here's a question for the physicists and opticians out there --
> 
> What is it that causes the shutter and/or gobo image in an Ellipsoidal 
> Reflector Spotlight to invert?
>


------------------------------

Message-Id: <7.0.1.0.0.20060207113850.01f72540 [at] interstellar.com>
Date: Tue, 07 Feb 2006 11:40:21 -0800
From: Jerry Durand <jdurand [at] interstellar.com>
Subject: Re: Good news: Blue Light Makes People Alert at Night
In-Reply-To: <list-27396859 [at] prxy.net>
References: <list-27396859 [at] prxy.net>

At 11:26 AM 2/7/2006, you wrote:
>A blue light is pretty well standard for the 'high beam' warning light.

I just wish the blue "high beam" light and the green "cruise" lights 
dimmed with the dash lights (they may in some cars, just not the ones 
I've owned).  They're downright blinding at night.



-- 
Jerry Durand, Durand Interstellar, Inc.  www.interstellar.com
219 Oak Wood Way, Los Gatos, California 95032-2523 USA
tel: +1 408 356-3886, USA toll free: 1 866 356-3886



------------------------------

Date: Tue, 07 Feb 2006 14:44:53 -0500
Subject: Re: Super bowl halftime show.
From: Herrick Goldman <Herrick [at] HGLightingDesign.com>
Message-ID: <C00E62E5.AEC3%Herrick [at] HGLightingDesign.com>
In-Reply-To: <list-27393326 [at] prxy.net>

Well yes. It was nice to see Lenny still cashing in on Trek!


On 2/7/06 12:19 PM, "Alf Sauve" <alf.sauve [at] mindspring.com> wrote:

> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
> 
> I can't believe nobody has mentioned the Aleve commercial.  (Which you can
> see at Aleve.com) I'm starting to
>  relate.


-- 
Herrick Goldman
Lighting Designer, NYC
www.HGLightingDesign.com
917-797-3624
"To the scores of silent alchemists who wreak their joy in darkness and in
light bringing magic to life, we bow most humbly. "-CDS



------------------------------

From: FrankWood95 [at] aol.com
Message-ID: <9b.705bf30b.311a528c [at] aol.com>
Date: Tue, 7 Feb 2006 14:44:12 EST
Subject: Re: ERS Optics

In a message dated 07/02/06 17:39:50 GMT Standard Time, slitterst [at] ithaca.edu 
writes:

> What is it that causes the shutter and/or gobo image in an Ellipsoidal 
>  Reflector Spotlight to invert?
>  
>  I have always been taught and told that it's the secondary focal point 
>  of the reflector.  Which makes sense, until I look through the lens and 
>  find that the lens does it as well.  So if both the secondary focal 
>  point and the lens invert the image, shouldn't the image come out normally?

It is a general property of converging lenses. They all do it, all 
projectors, from slide projectors to follow spots.

There are two distinct optical systems in an ellipsoidal. One is there to 
collect the maximum posible amount of light from the lamp and direct it through 
the gate; the other is to project an image of the gate onto the stage. 

Inevitably, the two interact. and this is the art of the lantern designer. I 
have seen many lanterns where the secondary focus of the reflector was too 
near the gel frame for comfort, with a clear image of the filament on a dirty gel.

Frank Wood

------------------------------

Date: Tue, 07 Feb 2006 14:47:33 -0500
From: Stephen Litterst <slitterst [at] ithaca.edu>
Subject: Re: ERS Optics
In-reply-to: <list-27397332 [at] prxy.net>
Message-id: <43E8F955.6070106 [at] ithaca.edu>
References: <list-27397332 [at] prxy.net>

FrankWood95 [at] aol.com wrote:
> ---------------------------------------------------

> Inevitably, the two interact. and this is the art of the lantern designer. I 
> have seen many lanterns where the secondary focus of the reflector was too 
> near the gel frame for comfort, with a clear image of the filament on a dirty gel.

Woah.  Now I'm getting confused.  I thought the secondary focus of the 
reflector was at (or near) the gate.  I don't see how it could be at the 
gel frame.

Steve L.

-- 
Stephen Litterst
Technical Supervisor
Ithaca College, Theatre Arts
607.274.3947
slitterst [at] ithaca.edu

------------------------------

From: FrankWood95 [at] aol.com
Message-ID: <13f.244f4274.311a545c [at] aol.com>
Date: Tue, 7 Feb 2006 14:51:56 EST
Subject: Re: ERS Optics

In a message dated 07/02/06 18:02:06 GMT Standard Time, pschreiner [at] rmwc.edu 
writes:

> 
>  The shutters and/or gobos sit at a point very close to (and usually,
>  IIRC, just "DS" of) the reflector's second focal point (which, if you
>  recall, is also the first focal point of the lens).  When the light
>  passes through the lens and then through the focal point on the other
>  side, that's when the inversion happens.
>  
>  Or at least that's how I explain it in class! :)

And not very well! The reflector is there to provide as even an illumination 
of the gate as is practable, while gathering as much of the light output of 
the lamp as it can. Having the second focus of the reflector anywher the gate is 
a recipe for a 'peaky' field.



Frank Wood

------------------------------

From: FrankWood95 [at] aol.com
Message-ID: <280.54d4312.311a55ae [at] aol.com>
Date: Tue, 7 Feb 2006 14:57:34 EST
Subject: Re: ERS Optics

In a message dated 07/02/06 18:56:16 GMT Standard Time, clmortimore [at] bsu.edu 
writes:

> Does that make any sense?
>  Is it any kind of correct?

No, and No.

Frank Wood

------------------------------

Date: Tue, 07 Feb 2006 15:02:20 -0500
Subject: Re: cable drums?
From: Bill Sapsis <bill [at] sapsis-rigging.com>
Message-ID: <C00E66FC.8A95%bill [at] sapsis-rigging.com>
In-Reply-To: <list-27397162 [at] prxy.net>

Ahem.  

You want cable drums for electric wire you go to an electrical guy.

You want cable drums for wire rope you go to a rigger.

Why look!  I'm a rigger.  And we do cable drums.  And I'm a list member.
What a happy coincidence.

Whatcha need?

Bill S
www.sapsis-rigging.com
800.727.7471
800.292.3851  fax
267.278.4561 mobile

Join the Long Reach Long Riders on their 3rd annual cross country charity
motorcycle ride.   <www.LRLR.org>






On 2/7/06 2:49 PM, "Richard Wolpert" <richw [at] unionconnector.com> wrote:

> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
> 
> Try www.conductix.com they make all sorts of power equipment AND cord reels.
> Go to the bottom of their HOME page and click on Cord Reels.
> 
> Richard A.Wolpert
> President
> Union Connector Co., Inc.
> 40 Dale Street
> West Babylon, NY  11704
> Ph: 631-753-9550 ext. 204
> Fx: 631-753-9560
> richw [at] unionconnector.com
> 
> -----Original Message-----
> From: Stagecraft [mailto:stagecraft [at] theatrical.net]On Behalf Of Fred
> Schoening, Jr.
> Sent: Tuesday, February 07, 2006 2:25 PM
> To: Stagecraft
> Subject: cable drums?
> 
> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
> 
> Hiya, Kids!
> 
> Who sells grooved drums for aircraft cable winches and
> the like in the US? So far my web searching hasn't come
> up with anything.
> 
> Thanks,
> 
> Fred
> 
> "Big Fred" Schoening
> Technical Director, Dallas Theater Center
> Dallas, Texas, USA
> 
> 



------------------------------

Message-ID: <20060207195410.2464.qmail [at] mail.cybercom.net>
References: <list-27394656 [at] prxy.net>
            <list-27397050 [at] prxy.net>
In-Reply-To: <list-27397050 [at] prxy.net>
From: "dale" <dale [at] cybercom.net>
Subject: Re: ERS Optics
Date: Tue, 07 Feb 2006 14:54:10 -0500

Stephen Litterst writes: 

> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> --------------------------------------------------- 
> 
> G. D. George wrote:
>> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
>> --------------------------------------------------- 
>> 
>> I *thought* that the gobo sat at the focal point and thus beam 
>> convergence
>> reversed the image.  Upon reflection, though (pun intended), all that 
>> that
>> situation would do is create a hotspot on the gobo. I drew it out, and 
>> what
>> I *think* happens is that the gobo must actually sit at a point in front 
>> of
>> the primary focal point where the beam spread is sufficient to project 
>> the
>> entire image.  The image is then reversed at the secondary focal point, 
>> in
>> front of the light. I don't have a text handy, but will look when I get 
>> over
>> to the theatre.
> 
> Watch out for texts, as they all have similar diagrams. (At least the 
> three I've checked).  And none show the light rays inverting in the lens, 
> which observation has shown to be true. 
> 
> Based on that observation I'm fairly certain the gate (gobo and shutter 
> magic) is *between* the secondary focal point and the lens.  Which is 
> counter to what I've been taught (and what I've been teaching). 
> 
> Without knowing a specific fixture contact at the major manufacturers, 
> I've been talking with sales folk and tech service people who are very 
> nice, but can't get into the detail I'd like to discuss. 
> 
> Steve L. 
>

  Before the light reaches the gobo, the beam is more
or less symmetrical.  So inversions there are irrelvant.
I'm at an office right now, and don't have in my brain
what the optics for the light in question, so I can't
speak further. 

 --Dale 


------------------------------

Date: Tue, 07 Feb 2006 15:12:07 -0500
From: Stephen Litterst <slitterst [at] ithaca.edu>
Subject: Re: ERS Optics
In-reply-to: <list-27397874 [at] prxy.net>
Message-id: <43E8FF17.9020402 [at] ithaca.edu>
References: <list-27394656 [at] prxy.net> <list-27397050 [at] prxy.net>
 <list-27397874 [at] prxy.net>

dale wrote:
> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------

>> Watch out for texts, as they all have similar diagrams. (At least the 
>> three I've checked).  And none show the light rays inverting in the 
>> lens, which observation has shown to be true.
>> Based on that observation I'm fairly certain the gate (gobo and 
>> shutter magic) is *between* the secondary focal point and the lens.  
>> Which is counter to what I've been taught (and what I've been teaching).
>> Without knowing a specific fixture contact at the major manufacturers, 
>> I've been talking with sales folk and tech service people who are very 
>> nice, but can't get into the detail I'd like to discuss.
>> Steve L.
> 
>  Before the light reaches the gobo, the beam is more
> or less symmetrical.  So inversions there are irrelvant.

They're irrelevant only in respect to the light at that moment.  What 
the light does after the inversion (go through a gobo) is quite relevant.

If the light inverts before the gobo, it projects an image of the gobo 
as-is on the lens.  If the light inverts after the gobo, it projects an 
inverted image on the lens.   So where the path of the light inverts is 
quite relevant to this discussion.

Steve L.

-- 
Stephen Litterst
Technical Supervisor
Ithaca College, Theatre Arts
607.274.3947
slitterst [at] ithaca.edu

------------------------------

From: FrankWood95 [at] aol.com
Message-ID: <200.11b49433.311a59f3 [at] aol.com>
Date: Tue, 7 Feb 2006 15:15:47 EST
Subject: Re: ERS Optics

I am genuinely amazed at the general ignorance of the optics of stage 
lanterns.

Learn the basics, which I had done at the age of 14: Start off with a naked 
lamp, and go from there to a lamp in a box, add a reflector, and then a lens. 
You have designed the basic spotlight. Use a bigger reflector, and a bigger 
lens (Fresnel) and you have a Fresnel.

Then it's trickier. You have to separate out the duties of the lens and the 
reflector. Two optical systems, but when you have done that, you have an 
elliptical. The Stelmar was the first, I think.

After that, it's up to the ingenuity of the designer.


Frank Wood

------------------------------

Subject: RE: ERS Optics
Date: Tue, 7 Feb 2006 15:21:48 -0500
Message-ID: <E8C02C6B1ABC6B4DBF28862341A33F8601653F5E [at] excusma100>
From: "Cyr, Dale" <Dale.Cyr [at] getronics.com>

Steve:

Your understanding is correct.

The gate sits between the first and second focal points.
Hence the 'bottom' shutter affects the 'top' of the image on stage.

Your impromptu experiment is producing unexpected results
Because you're assumption about the lens being used at=20
(or near) its focal length is not quite correct.

If you take the lens, and hold it a few inches above a piece of paper,
You see that the image is upright and correct left/right.

But if you continue to raise the lens above the paper,
It will eventually reverse the image.

ers instruments place the lens in the "close to the papaer" edge of this
experiement.
(wish I could think of a better way to say that...)

This link: http://www.volpiusa.com/whitepapers/FundamentalsofOptics.pdf
Especially page 9, may explain it better than I am.

Dale cyr
Training Supervisor
IATSE Local 93
Spokane Wa

> Of Stephen Litterst
> Sent: Tuesday, February 07, 2006 8:35 AM
<snip>
> What is it that causes the shutter and/or gobo image in an=20
> Ellipsoidal=20
> Reflector Spotlight to invert?
>=20
> I have always been taught and told that it's the secondary=20
> focal point=20
> of the reflector.  Which makes sense, until I look through=20
> the lens and=20
> find that the lens does it as well.  So if both the secondary focal=20
> point and the lens invert the image, shouldn't the image come=20
> out normally?
>=20
> All the textbooks I have collected do not show the lens inverting the=20
> image.  However, grabbing a lens tube from a Source4 and a 360Q and=20
> looking at them from the appropriate focal length shows the=20
> image inverted.
<snip>

------------------------------

Date: Tue, 07 Feb 2006 15:28:17 -0500
Subject: Re: ERS Optics
From: Herrick Goldman <Herrick [at] HGLightingDesign.com>
Message-ID: <C00E6D11.AEDA%Herrick [at] HGLightingDesign.com>
In-Reply-To: <list-27398155 [at] prxy.net>


Frank! We're not all four-score and ten!


We don't need to build our own lights out of tin cans. We've had them built
for us. Now granted it's a bonus to know how they work but it's not like I
have to build my own Ellispoidal reflector every day.

Ask how many drivers understand internal combustion.



On 2/7/06 3:15 PM, "FrankWood95 [at] aol.com" <FrankWood95 [at] aol.com> wrote:

> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
> 
> I am genuinely amazed at the general ignorance of the optics of stage
> lanterns.
> 
> Learn the basics, which I had done at the age of 14: Start off with a naked
> lamp, and go from there to a lamp in a box, add a reflector, and then a lens.
> You have designed the basic spotlight. Use a bigger reflector, and a bigger
> lens (Fresnel) and you have a Fresnel.
> 
> Then it's trickier. You have to separate out the duties of the lens and the
> reflector. Two optical systems, but when you have done that, you have an
> elliptical. The Stelmar was the first, I think.
> 
> After that, it's up to the ingenuity of the designer.
> 
> 
> Frank Wood
> 

-- 
Herrick Goldman
Lighting Designer, NYC
www.HGLightingDesign.com
917-797-3624
"To the scores of silent alchemists who wreak their joy in darkness and in
light bringing magic to life, we bow most humbly. "-CDS



------------------------------

Message-ID: <00b801c62c27$7fcc7410$6401a8c0 [at] amd2200>
From: "Idaho Scenic and Rigging" <idahoscenic [at] cableone.net>
References: <list-27398408 [at] prxy.net>
Subject: Re: ERS Optics
Date: Tue, 7 Feb 2006 13:45:58 -0700


>
> Ask how many drivers understand internal combustion.
>
>
>
I had to reload my HP drivers just the other day and hope they stay
ignorant of internal combustion.
I have enough trouble with Windows.

Robert Riddle
Will Disagree for the Sake of Discussion
Will Discuss for the Sake of Learning


------------------------------

Message-ID: <ce2084ad0602071257s3f8a9cafha53688c2247dd219 [at] mail.gmail.com>
Date: Tue, 7 Feb 2006 15:57:19 -0500
From: Ken Romaine <ken.stagecraft [at] gmail.com>
Subject: Re: ERS Optics
In-Reply-To: <list-27398949 [at] prxy.net>
References: <list-27398408 [at] prxy.net> <list-27398949 [at] prxy.net>

> > Ask how many drivers understand internal combustion.
> >
> I had to reload my HP drivers just the other day and hope they stay
> ignorant of internal combustion.
> I have enough trouble with Windows.

Isn't Windows the leading cause of internal combustion of computers?

Oh...wait...sorry...I got that wrong.

Windows is the leading cause of spontaneous combustion - of computer users.

--
Ken Romaine
Business Development Manager
Barco Media & Entertainment
The opinions expressed here are mine - all mine - no matter how
much I want to impose them on the rest of the world.

------------------------------

Message-Id: <3.0.6.32.20060207133101.00d1f2e0 [at] pop.west.cox.net>
Date: Tue, 07 Feb 2006 13:31:01
From: CB <psyd [at] cox.net>
Subject: Re: Super bowl halftime show

>SHAME ON ALL YOU GUYS!!  THAT WAS THE ROLLING F'IN STONES!  Still beat
>the heck out of Up With People, U2.

And they can paint better than Helen Keller, what's your point?  I say, go
to the cities that the teams are from and have the battle of the band
winners from each city come and take onteh other at the superbowl.  New
talent gets showcased, old boring whitebread crap stays on DVD in the back
where it belongs, and you get to see another team rivalry between football
segments.
				Chris "Chris" Babbie
				Location Sound
				MON AZ

Delete key training and post trimming done by appointment.  Rates
negotiable, will trade for typing lessons/ADD treatment...

------------------------------

Subject: RE: ERS Optics
Date: Tue, 7 Feb 2006 16:15:25 -0500
Message-ID: <6E497ADB607656479C24E6D7BF6B505A042A9B20 [at] exchange.rmwc.edu>
From: "Paul Schreiner" <pschreiner [at] rmwc.edu>

> And not very well! The reflector is there to provide as even=20
> an illumination=20
> of the gate as is practable, while gathering as much of the=20
> light output of=20
> the lamp as it can. Having the second focus of the reflector=20
> anywher the gate is=20
> a recipe for a 'peaky' field.

Frank, haven't you heard of "beam angle" and "field angle"?  When bench
focusing an ERS, there's a choice to be made between whether you want
the beam to be flat (as you describe) or with a peak in the middle.  If
flat, it's great for gobos, but poor for area lighting with multiple
instruments, because the intensity will brighten where the beams
overlap.  A peaked focus is better for area lighting without gobos;
overlapping beams then blend together more easily.

This is done by moving the filament of the lamp in relation to the F1
point of the reflector.

One of the purposes of the gate, in my understanding, is to help cut
down the amount of light emanating from the front side of the filament
so that the remainder is more focusable; since the front half of the
ellipse is removed, there's no control over a little less than half the
available light, as it doesn't necessarily pass through the F2 point at
all.

And that, also in my understanding, is why the gobo slot and shutters
are beyond the F2 point and beyond the gate.  You want the maximum
amount of focusable light (which is the portion of the light that has
bounced off the reflector and passed through F2) and a minimum of
extraneous light (which is the portion of the beam thrown off the front
of the lamp filament).  Cut down the extraneous light with the gate, and
you've got a better quality beam coming out the other end.

Now, I could be wrong.  I've not really undergone more than a very
cursory examination of the engineering involved in, say, the development
of the Source 4.  But nothing I've seen so far that implies the gate is
anywhere but between the F2 point and the lens makes any sense to me...

Or I could just be stubborn in my approaching middle-age...

------------------------------

Message-Id: <3.0.6.32.20060207134803.00d1f2e0 [at] pop.west.cox.net>
Date: Tue, 07 Feb 2006 13:48:03
From: CB <psyd [at] cox.net>
Subject: Re: Super bowl halftime show

>Is it
>possible that otherwise good sound was seriously degraded by being sent
>through a poor quality "Five second delay" devise?

Possible, but not probable.  Using a device of that nature, on a broadcast
of that nature, that doesn't have a reputation for bulletproof performance,
and/or not having another redundant copy in case one malfunctioned, is a
firing offense.  I'm betting that there were last minute changes or serious
problems to produce sound like that.  There is no way that the guys that
got this gig were just slacking or faking it.  Something had to go wrong.
Something big.

------------------------------

Message-Id: <3.0.6.32.20060207134815.00d30090 [at] pop.west.cox.net>
Date: Tue, 07 Feb 2006 13:48:15
From: CB <psyd [at] cox.net>
Subject: RE: Job titles

>No, no, no....If you use my line, you have to pay my travel and per =
>diem....

Hmmm... copyright office doesn't show the work as registered... if you
could provide a date.... hmmm...

Submit your receipts and I'll see what I can do.
				Chris "Chris" Babbie
				Location Sound
				MON AZ

Delete key training and post trimming done by appointment.  Rates
negotiable, will trade for typing lessons/ADD treatment...

------------------------------

Message-Id: <6.2.3.4.2.20060207162719.01f415e0 [at] pop.service.ohio-state.edu>
Date: Tue, 07 Feb 2006 16:28:28 -0500
From: Richard Keith <keith.78 [at] osu.edu>
Subject: Re: Super bowl halftime show
In-Reply-To: <list-27399552 [at] prxy.net>
References: <list-27399552 [at] prxy.net>

At 08:31 AM 2/7/2006, CB wrote:
>I say, go
>to the cities that the teams are from and have the battle of the band
>winners from each city


You mean we would get to see Marching Bands at half time?? Wow I would love it.

Rick Keith
OSU Mansfield




------------------------------

Reply-To: <stagecraft [at] jeffsalzberg.com>
From: "Jeffrey E. Salzberg" <stagecraft [at] jeffsalzberg.com>
Subject: RE: Job titles
Date: Tue, 7 Feb 2006 16:32:09 -0500
Message-ID: <000001c62c2d$f3bfc6a0$6501a8c0 [at] Dell>
In-Reply-To: <list-27399961 [at] prxy.net>


> >No, no, no....If you use my line, you have to pay my travel 
> and per = 
> >diem....
> 
> Hmmm... copyright office doesn't show the work as 
> registered.

It doesn't have to.  According to copyright law, a work is copyrighted as
soon as it's created.  No registration is required.  As for the date, it's
been on my web site for years and I can produced witnesses who've seen it.

It's all moot, though, since I know you're an honorable man and will do
what's right, merely because it's the ethical thing to do.


------------------------------

From: IAEG [at] aol.com
Message-ID: <1a7.47f99b10.311a6cc8 [at] aol.com>
Date: Tue, 7 Feb 2006 16:36:08 EST
Subject: Re: Super bowl halftime show

I still think it was a huge snub to DETROIT to have the Motown artists only 
involved with pre game, 

I can't imagine them doing the SUPER BOWL in NASHVILLE and not having a C & W 
half time 

very poor public relations from the NFL, , , but having dealt with the NFL on 
a couple of occaisons when we have hosted Super Bowl here in Tampa, ,  I can 
tell you they really don't give a damn about the host city what so ever, , , 
and certainly not any cultural aspects of the location and definately NOT any 
of the local suppliers either, , , they would sooner fly stuff in over night 
from LA then even call a local supplier when the Super Bowl is here in Tampa, 

oh well, , , 

we have another 2 - 3 years before it's here again, , hopefully I will be out 
of town

very best,

Keith Arsenault
President
IAEG -  International Arts & Entertainment Group 
Tampa, Florida

------------------------------

From: "G. D. George" <ggeorge [at] capital.edu>
Subject: RE: ERS Optics
Date: Tue, 7 Feb 2006 17:12:25 -0500
In-Reply-To: <list-27397732 [at] prxy.net>
Message-ID: <MALFRONT9IuXZ2y2Fko000000a8 [at] malfront.capital.edu>

Geez, Frank, take it easy.

G. D. George
Assistant Professor and Technical Director
Capital University Theatre
Department of Communications
1 College and Main
Columbus, OH 43209

(614) 236-6498
ggeorge [at] capital.edu	

-----Original Message-----
From: Stagecraft [mailto:stagecraft [at] theatrical.net] On Behalf Of
FrankWood95 [at] aol.com
Sent: Tuesday, February 07, 2006 2:58 PM
To: Stagecraft
Subject: Re: ERS Optics

For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
---------------------------------------------------

In a message dated 07/02/06 18:56:16 GMT Standard Time, clmortimore [at] bsu.edu 
writes:

> Does that make any sense?
>  Is it any kind of correct?

No, and No.

Frank Wood




------------------------------

Date: Tue, 07 Feb 2006 17:42:35 -0500
Subject: Re: ERS Optics
From: Herrick Goldman <Herrick [at] HGLightingDesign.com>
Message-ID: <C00E8C8B.AEF6%Herrick [at] HGLightingDesign.com>
In-Reply-To: <list-27399273 [at] prxy.net>


I wouldn't know. I have a fruit on my computer's lid.

On 2/7/06 3:57 PM, "Ken Romaine" <ken.stagecraft [at] gmail.com> wrote:


> 
> Windows is the leading cause of spontaneous combustion - of computer users.
> 
> --
> Ken Romaine
> Business Development Manager
> Barco Media & Entertainment
> The opinions expressed here are mine - all mine - no matter how
> much I want to impose them on the rest of the world.
> 

-- 
Herrick Goldman
Lighting Designer, NYC
www.HGLightingDesign.com
917-797-3624
"To the scores of silent alchemists who wreak their joy in darkness and in
light bringing magic to life, we bow most humbly. "-CDS



------------------------------

From: IAEG [at] aol.com
Message-ID: <144.55f90f01.311a7c56 [at] aol.com>
Date: Tue, 7 Feb 2006 17:42:30 EST
Subject: Re: ERS Optics


In a message dated 2/7/06 5:40:35 PM, Herrick [at] HGLightingDesign.com writes:

<< 
I wouldn't know. I have a fruit on my computer's lid. >>

me too,, , , I just hope that "fruit" doesn't morph into mouse ears in the 
near future, , , , 

: - ) 

very best,

Keith Arsenault

IAEG -  International Arts & Entertainment Group 
Tampa, Florida

------------------------------

Reply-To: <stagecraft [at] jeffsalzberg.com>
From: "Jeffrey E. Salzberg" <stagecraft [at] jeffsalzberg.com>
Subject: RE: ERS Optics
Date: Tue, 7 Feb 2006 17:48:02 -0500
Message-ID: <000701c62c38$8d867db0$6501a8c0 [at] Dell>
In-Reply-To: <list-27401784 [at] prxy.net>

 
> I wouldn't know. I have a fruit on my computer's lid. >>
> 
> me too,, , ,

You guys really need to clean off your computers.


------------------------------

Message-ID: <43E92627.7090505 [at] gmail.com>
Date: Tue, 07 Feb 2006 17:58:47 -0500
From: Brian James <brianedwardjames [at] gmail.com>
Reply-To:  brianedwardjames [at] gmail.com
Subject: Football Fields

Okay, this may be a dumb question  but the only think I know about 
football is that it really messes up parking on campus during a home game.

I know the football field is 100 yards long, however, how wide is it 
from side line to side line?

Also, how big is the end zone?

We are looking at doing an event on a field and I am trying to figure 
out how much space I have.


I do appreciate it!


-- 
Brian James



------------------------------

Date: Tue, 07 Feb 2006 18:07:54 -0500
Message-Id: <8C7FA5276277BE1-1318-C36 [at] MBLK-M38.sysops.aol.com>
From: iaeg [at] aol.com
References: <list-27402292 [at] prxy.net>
In-Reply-To: <list-27402292 [at] prxy.net>
Subject: Re: Football Fields
Cc: brianedwardjames [at] gmail.com

Check out   http://www.infoplease.com/ipa/A0113430.html

I just used that last week for some boxing ring info

very best,

Keith Arsenault
International Arts & Entertainment Group




-----Original Message-----
From: Brian James <brianedwardjames [at] gmail.com>
To: Stagecraft <stagecraft [at] theatrical.net>
Sent: Tue, 07 Feb 2006 17:58:47 -0500
Subject: Football Fields

    For info, archives & UNSUBSCRIBE, see=20
<http://stagecraft.theprices.net/>=A0
 ---------------------------------------------------=A0
=A0
  Okay, this may be a dumb question but the only think I know about=20
football is that it really messes up parking on campus during a home=20
game.=A0
=A0
  I know the football field is 100 yards long, however, how wide is it=20
from side line to side line?=A0
=A0
 Also, how big is the end zone?=A0
=A0
  We are looking at doing an event on a field and I am trying to figure=20
out how much space I have.=A0
=A0
 I do appreciate it!=A0
=A0
 -- Brian James=A0
=A0

   =20

------------------------------

From: "ladesigners [at] juno.com" <ladesigners [at] juno.com>
Date: Tue, 7 Feb 2006 23:06:31 GMT
Subject: Re: Super bowl halftime show.
Message-Id: <20060207.150724.10965.70368 [at] webmail36.lax.untd.com>

I would also like to hear what the inside circle of long-time Stones sta=
ffers have to say about the sound quality as heard in the stands.
/s/ Richard
_____________________
I wonder what the buzz is at ABC this week about how audio from the fiel=
d sounded, , ,   anyone with any insight there ? =

very best,
Keith Arsenault



------------------------------

From: "ladesigners [at] juno.com" <ladesigners [at] juno.com>
Date: Tue, 7 Feb 2006 23:08:47 GMT
Subject: Re: ERS Optics
Message-Id: <20060207.150926.10965.70373 [at] webmail36.lax.untd.com>

Not to worry; they'll have an Intel engine under the hood soon enough.
/s/ Richard
________________________________ =

> I wouldn't know. I have a fruit on my computer's lid. >>
> =

> me too,, , ,

You guys really need to clean off your computers.




------------------------------

Message-Id: <7.0.0.10.0.20060207181001.01c9e1d0 [at] insightbb.com>
Date: Tue, 07 Feb 2006 18:12:44 -0500
From: Mike Brubaker <mdbrubaker [at] insightbb.com>
Subject: Re: Football Fields
In-Reply-To: <list-27402292 [at] prxy.net>
References: <list-27402292 [at] prxy.net>

http://www.athleticfieldmarker.com/footballfield.html

At 05:58 PM 2/7/2006, Brian James wrote:


>I know the football field is 100 yards long, however, how wide is it 
>from side line to side line?
>
>Also, how big is the end zone?


------------------------------

Message-ID: <43E929C5.9030406 [at] dreampossible.ca>
Date: Tue, 07 Feb 2006 18:14:13 -0500
From: Jim Hyslop <theatre [at] dreampossible.ca>
Organization: Dreampossible Inc.
Subject: Re: Super bowl halftime show
References: <list-27399954 [at] prxy.net>
In-Reply-To: <list-27399954 [at] prxy.net>

CB wrote:
>>Is it
>>possible that otherwise good sound was seriously degraded by being sent
>>through a poor quality "Five second delay" devise?
> 
> 
> Possible, but not probable.  Using a device of that nature, on a broadcast
> of that nature, that doesn't have a reputation for bulletproof performance,
> and/or not having another redundant copy in case one malfunctioned, is a
> firing offense.

Having worked for a company that sells equipment to television networks,
I can agree with that. A broadcast-quality (even in HD) five second
delay would be trivial to do, using off-the-shelf equipment.

-- 
Jim Hyslop


------------------------------

From: IAEG [at] aol.com
Message-ID: <23a.680121a.311a849e [at] aol.com>
Date: Tue, 7 Feb 2006 18:17:50 EST
Subject: Re: ERS Optics


In a message dated 2/7/06 6:13:05 PM, ladesigners [at] juno.com writes:

<< Not to worry; they'll have an Intel engine under the hood soon enough. >>

don't care what the chip is, , , long as I don't have to deal with WINDOWS

: - ) 

very best,

Keith Arsenault

IAEG -  International Arts & Entertainment Group 
Tampa, Florida

------------------------------

From: FrankWood95 [at] aol.com
Message-ID: <2d7.21219ed.311a851a [at] aol.com>
Date: Tue, 7 Feb 2006 18:19:54 EST
Subject: Re: ERS Optics

In a message dated 07/02/06 19:35:03 GMT Standard Time, slitterst [at] ithaca.edu 
writes:

> Watch out for texts, as they all have similar diagrams. (At least the 
>  three I've checked).  And none show the light rays inverting in the 
>  lens, which observation has shown to be true.

You have been reading bad texts. 
>  
>  Based on that observation I'm fairly certain the gate (gobo and shutter 
>  magic) is *between* the secondary focal point and the lens.  Which is 
>  counter to what I've been taught (and what I've been teaching).

You have ben teaching wrong, as well. There are two optical systems to 
consider. That of the lamp and reflector has as its business getting the maximum 
amount of light through the gate, heading for the lens.The lens is for projecting 
an image of the gate or gobo onto the stage.

Usually, this puts the secondary focus of the reflector well past the gate, 
and well past the lens as well, although I have seen soft filament images in 
the gels, which do nothing for their life.

Slide projectors, cinema projectors, and follow spots are all the same.



Frank Wood

------------------------------

From: FrankWood95 [at] aol.com
Message-ID: <89.35e04245.311a8664 [at] aol.com>
Date: Tue, 7 Feb 2006 18:25:24 EST
Subject: Re: ERS Optics

In a message dated 07/02/06 19:40:48 GMT Standard Time, Rees [at] fredonia.edu 
writes:

> If you can find a copy of Willard Bellman's 2nd edition, (Lighting the 
>  Stage, Art and Practice)there is a diagram of this process on the bottom 
>  of page 84.  The inverted image is the result of the effects of 
>  reflector, principal focal point which is just in front of the conjugal 
>  focal point where the template is and the refraction in objective lens 
>  system.

The inverted image has no connection with the reflector at all. It is a 
property of the focal length of the projection lens, and the image and objerct 
distances.


Frank Wood

------------------------------

From: "ladesigners [at] juno.com" <ladesigners [at] juno.com>
Date: Tue, 7 Feb 2006 23:30:57 GMT
Subject: Re: ERS Optics
Message-Id: <20060207.153155.10965.70428 [at] webmail36.lax.untd.com>

You might not be the first person to be carried kicking and screaming to=
 the Dark Side, but it could happen anyway. Know thy enemy, if you hate =
M$, or at least be prepared to transition gracefully to whatever OS that=
 will allow you to get your work done. THAT is the Bottom Line.
/s/ Richard =

____________________________
<< Not to worry; they'll have an Intel engine under the hood soon enough=
. >>

don't care what the chip is, , , long as I don't have to deal with WINDO=
WS
: - ) =

very best,
Keith Arsenault



------------------------------

From: FrankWood95 [at] aol.com
Message-ID: <19f.45235772.311a8878 [at] aol.com>
Date: Tue, 7 Feb 2006 18:34:16 EST
Subject: Re: ERS Optics

In a message dated 07/02/06 19:48:17 GMT Standard Time, slitterst [at] ithaca.edu 
writes:

> Woah.  Now I'm getting confused.  I thought the secondary focus of the 
>  reflector was at (or near) the gate.  I don't see how it could be at the 
>  gel frame.

You and many others. The secondary focus of the reflector is a long way 
forward of that. You want the light that comes through the gate to arrive at the 
lens. Do an experiment. Pull the lens tube out, light up, and see where the 
image of the filament is.


Frank Wood

------------------------------

Message-ID: <BAY113-DAV7CAEB84FC33B57D4A4445DF010 [at] phx.gbl>
From: "Laura McMeley" <LMcMeley [at] msn.com>
Subject: RE: AHJ and fire
Date: Tue, 7 Feb 2006 17:43:15 -0600
Message-ID: <003201c62c40$447efd60$4c508304 [at] tdolighting01>
In-Reply-To: <list-27394663 [at] prxy.net>

I understand they do this at the Eisemann Center, near Dallas. They get to
practice rescues from difficult to access places. This has a side benefit of
knowing that they could rescue any technician, should they need it, from the
grid, or FOH beam positions, etc. I heard they also offered to teach
repeling skills to the tech staff. Lots of benefits for everyone.

Laura McMeley
LD, Dalllas, TX
972-333-5016

> -----Original Message-----
> From: Stagecraft [mailto:stagecraft [at] theatrical.net] On Behalf Of Noemi
> Ybarra
> Sent: Tuesday, February 07, 2006 12:01 PM
> To: Stagecraft
> Subject: Re: AHJ and fire
> 
> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
> 
> Someone, somewhere (perhaps on this list?) told a story about how he had
> involved the local firefighters/rescue folks in his theater.  He offered
> them the chance to use it for rescue practice - rapelling from beams,
> climbing, etc.  They conducted regular exercises in the theater, a
> benefit to the agency.  It also benefitted the theater in a couple ways
> - the emergency folks got to know where it was, where the entrances
> were, and what the inside of the building looked like.  It also went a
> long way toward fostering goodwill.
> 
> Noemi Ybarra
> 
> --
> Jones & Phillips Associates, Inc.
> http://www.jonesphillips.com
> 301 North 5th Street
> Lafayette, Indiana 47901
> 765-423-1123 (Voice)
> 765-742-4013 (Fax)
> 


------------------------------

From: FrankWood95 [at] aol.com
Message-ID: <217.12adc08b.311a8bfb [at] aol.com>
Date: Tue, 7 Feb 2006 18:49:15 EST
Subject: Re: ERS Optics

In a message dated 07/02/06 20:26:10 GMT Standard Time, 
Herrick [at] HGLightingDesign.com writes:

> We don't need to build our own lights out of tin cans. We've had them built
>  for us. Now granted it's a bonus to know how they work but it's not like I
>  have to build my own Ellispoidal reflector every day.

No, you don't. But you might understand them better if you had. I understand 
why a chisel is sharpened as it is. I ow it to myself to understand a S4 on 
the same level..
>  
>  Ask how many drivers understand internal combustion.

Well, I do.


Frank Wood

------------------------------

Message-ID: <43E93381.80505 [at] fredonia.edu>
Date: Tue, 07 Feb 2006 18:55:45 -0500
From: "Stephen E. Rees" <Rees [at] fredonia.edu>
Reply-To:  Rees [at] fredonia.edu
Subject: Clear Horses or Unicorns
References: <list-27397162 [at] prxy.net>

Sorry!  This is not about the A/B Clydesdales and the Super Bowl.

The director of Glass Menagerie does not now wish to use the glass 
unicorns that were made especially for the production.  Rather, she 
wants to use small clear plastic horses instead.  Any ideas where these 
might be found?  The usual suspects don't seem to have them.  About 1.5 
- 2" tall and 2-3" long would be ideal.  Googling has been unsuccessful 
so far.
TIA.
Steve Rees, TD
SUNY-Fredonia


------------------------------

From: IAEG [at] aol.com
Message-ID: <231.67b1541.311a8e87 [at] aol.com>
Date: Tue, 7 Feb 2006 19:00:07 EST
Subject: Re: Clear Horses or Unicorns


In a message dated 2/7/06 6:53:33 PM, Rees [at] fredonia.edu writes:

<< The director of Glass Menagerie does not now wish to use the glass 
unicorns that were made especially for the production.  Rather, she 
wants to use small clear plastic horses instead.  Any ideas where these 
might be found?  The usual suspects don't seem to have them.  About 1.5 
- 2" tall and 2-3" long would be ideal.  Googling has been unsuccessful 
so far. >>

a director who makes that request without either   

a)  already having a source for them  or  

 b) working in an environment where the shop can just "make" them  

ought to get a good tongue wagging, , , 


very best,

Keith Arsenault

IAEG -  International Arts & Entertainment Group 
Tampa, Florida

------------------------------

From: IAEG [at] aol.com
Message-ID: <29b.4fde7dd.311a8fd5 [at] aol.com>
Date: Tue, 7 Feb 2006 19:05:41 EST
Subject: CT

Any one on the list with experience in permitting a show in a tent in CT ? 

if so, ,please contact me off list


thanks


very best,

Keith Arsenault
President
IAEG -  International Arts & Entertainment Group 
Tampa, Florida

------------------------------

From: FrankWood95 [at] aol.com
Message-ID: <253.5fe9dcd.311a903a [at] aol.com>
Date: Tue, 7 Feb 2006 19:07:22 EST
Subject: Re: ERS Optics

In a message dated 07/02/06 21:16:06 GMT Standard Time, pschreiner [at] rmwc.edu 
writes:

> Frank, haven't you heard of "beam angle" and "field angle"?

Yes, and I draw a strong distinction between them . bBut it all depends on 
your definitiond. With an ers, the two are substantially identical. With a 
fresnel, that is a long way from true.

 
>  Or I could just be stubborn in my approaching middle-age...

We all are. I am past it,


Frank Wood

------------------------------

Date: Tue, 07 Feb 2006 19:12:14 -0500
Subject: Re: ERS Optics
From: Herrick Goldman <Herrick [at] HGLightingDesign.com>
Message-ID: <C00EA18E.AF0D%Herrick [at] HGLightingDesign.com>
In-Reply-To: <list-27402605 [at] prxy.net>


And I can't wait! Smaller, Faster, better....did I say faster?



On 2/7/06 6:08 PM, "ladesigners [at] juno.com" <ladesigners [at] juno.com> wrote:

> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
> 
> Not to worry; they'll have an Intel engine under the hood soon enough.
> /s/ Richard
> ________________________________
>> I wouldn't know. I have a fruit on my computer's lid. >>
>> 
>> me too,, , ,
> 
> You guys really need to clean off your computers.
> 
> 
> 
> 

-- 
Herrick Goldman
Lighting Designer, NYC
www.HGLightingDesign.com
917-797-3624
"To the scores of silent alchemists who wreak their joy in darkness and in
light bringing magic to life, we bow most humbly. "-CDS



------------------------------

From: "ladesigners [at] juno.com" <ladesigners [at] juno.com>
Date: Wed, 8 Feb 2006 00:10:16 GMT
Subject: Re: CT
Message-Id: <20060207.161022.10965.70516 [at] webmail36.lax.untd.com>

If Cirque has played in CT, you wouldn't be re-inventing the wheel.
/s/ Richard
_____________________________
Any one on the list with experience in permitting a show in a tent in CT=
 ? =

Keith Arsenault



------------------------------

Date: Tue, 07 Feb 2006 19:15:45 -0500
Subject: Re: CT
From: Herrick Goldman <Herrick [at] HGLightingDesign.com>
Message-ID: <C00EA261.AF11%Herrick [at] HGLightingDesign.com>
In-Reply-To: <list-27403833 [at] prxy.net>


If you don't get any response...I can get you in touch with a guy

On 2/7/06 7:05 PM, "IAEG [at] aol.com" <IAEG [at] aol.com> wrote:

> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
> 
> Any one on the list with experience in permitting a show in a tent in CT ?
> 
> if so, ,please contact me off list
> 
> 
> thanks
> 
> 
> very best,
> 
> Keith Arsenault
> President
> IAEG -  International Arts & Entertainment Group
> Tampa, Florida
> 

-- 
Herrick Goldman
Lighting Designer, NYC
www.HGLightingDesign.com
917-797-3624
"To the scores of silent alchemists who wreak their joy in darkness and in
light bringing magic to life, we bow most humbly. "-CDS



------------------------------

Date: Tue, 07 Feb 2006 19:16:04 -0500
Subject: Re: CT
From: Herrick Goldman <Herrick [at] HGLightingDesign.com>
Message-ID: <C00EA274.AF12%Herrick [at] HGLightingDesign.com>
In-Reply-To: <list-27403833 [at] prxy.net>

Sorry folks meant that to be off-list.

-- 
Herrick Goldman
Lighting Designer, NYC
www.HGLightingDesign.com
917-797-3624
"To the scores of silent alchemists who wreak their joy in darkness and in
light bringing magic to life, we bow most humbly. "-CDS



------------------------------

From: "ladesigners [at] juno.com" <ladesigners [at] juno.com>
Date: Wed, 8 Feb 2006 00:13:37 GMT
Subject: Re: ERS Optics
Message-Id: <20060207.161437.10965.70529 [at] webmail36.lax.untd.com>

OK, maybe 4 CPUs in tandem...
/s/ Richard
________________________

And I can't wait! Smaller, Faster, better....did I say faster?



> Not to worry; they'll have an Intel engine under the hood soon enough.=

> /s/ Richard
> ________________________________
>> I wouldn't know. I have a fruit on my computer's lid. >>
>> =

>> me too,, , ,
> =

> You guys really need to clean off your computers.
-- =

Herrick Goldman
 


------------------------------

From: IAEG [at] aol.com
Message-ID: <242.67ede6c.311a928f [at] aol.com>
Date: Tue, 7 Feb 2006 19:17:19 EST
Subject: Re: CT


In a message dated 2/7/06 7:12:07 PM, ladesigners [at] juno.com writes:

<< 
If Cirque has played in CT, you wouldn't be re-inventing the wheel.
/s/ Richard >>

I do believe C d S has played in Hartford as a matter of fact.  I can't 
recall if BIG APPLE has or not

I know that CT has historically had very tight tent regulations dating back 
to the RBBB circus tent fire of 1944 

very best,

Keith Arsenault
President
IAEG -  International Arts & Entertainment Group 
Tampa, Florida

813 831 3465 Mr. Arsenault's Office
813 205 0893 Mr. Arsenault's Cellular

www.iaeginc.com
www.circusnexus.org

------------------------------

From: "JUSTIN DAVID BENNETT" <jbennett43 [at] mail.accd.edu>
Cc: Rees [at] fredonia.edu
Subject: RE: Clear Horses or Unicorns
Date: Tue, 7 Feb 2006 18:20:45 -0600
In-Reply-To: <list-27403537 [at] prxy.net>
Message-ID: <IUCEAM00.65H [at] mail.accd.edu>

	I can't point to a supplier. That seems like a fairly specific
request. If all else fails, buy some regular plastic ones mold them and cast
them with clear casting resin (available at the hobby store). Though, if the
reason of going to plastic is to avoid the possibility of shattering, resin
may not be the right choice. FWIW.

Justin Bennett
Technical Director / Theatre Manager
St. Philip's College - Watson Fine Arts Center
jbennett43 [at] mail.accd.edu
(210) 531-4706 Office
(210) 531-4768 Fax
 
-----Original Message-----
From: Stagecraft [mailto:stagecraft [at] theatrical.net] On Behalf Of Stephen E.
Rees


The director of Glass Menagerie does not now wish to use the glass 
unicorns that were made especially for the production.  Rather, she 
wants to use small clear plastic horses instead.  Any ideas where these 
might be found?  The usual suspects don't seem to have them.  About 1.5 
- 2" tall and 2-3" long would be ideal.  Googling has been unsuccessful 
so far.



------------------------------

Message-ID: <43E94B67.8010802 [at] cybercom.net>
Date: Tue, 07 Feb 2006 20:37:43 -0500
From: Dale Farmer <dale [at] cybercom.net>
Organization: I'm working on that....
Subject: Re: Super bowl halftime show
References: <list-27399552 [at] prxy.net> <list-27400103 [at] prxy.net>
In-Reply-To: <list-27400103 [at] prxy.net>

Richard Keith wrote:
> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
> 
> At 08:31 AM 2/7/2006, CB wrote:
>> I say, go
>> to the cities that the teams are from and have the battle of the band
>> winners from each city
> 
> 
> You mean we would get to see Marching Bands at half time?? Wow I would 
> love it.
> 
> Rick Keith
> OSU Mansfield

	I would love to see a marching band do the superbowl
halftime show.  Would be far better than the half-wit
'extravaganza' shows we've seen the last several years.
I might even turn on the tv for the game for that.  Usually
I just tape it, so I can fast forward through all the football,
and see the commercials.  Didn't bother to do that this year.

    --Dale

------------------------------

Message-ID: <43E94D85.5060303 [at] cybercom.net>
Date: Tue, 07 Feb 2006 20:46:45 -0500
From: Dale Farmer <dale [at] cybercom.net>
Organization: I'm working on that....
Subject: Re: Football Fields
References: <list-27402292 [at] prxy.net>
In-Reply-To: <list-27402292 [at] prxy.net>

Brian James wrote:
> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
> 
> Okay, this may be a dumb question  but the only think I know about 
> football is that it really messes up parking on campus during a home game.
> 
> I know the football field is 100 yards long, however, how wide is it 
> from side line to side line?
> 
> Also, how big is the end zone?
> 
> We are looking at doing an event on a field and I am trying to figure 
> out how much space I have.
> 
> 
> I do appreciate it!
> 
> 

    Goo out and measure it.  and measure the access to the field as
well.  Also go and have a good chat with the groundskeeper.
Athletic field surfaces, whether fake or real grass have a lot of
constraints that are not obvious.  Underfield drainage systems, 
sprinklers, per square foot loading, and don't you dare leave
any ruts or divots.

   --Dale (who encountered the grass nazi... I came in second. )


------------------------------

Message-ID: <43E953F0.4000507 [at] gmail.com>
Date: Tue, 07 Feb 2006 21:14:08 -0500
From: Brian James <brianedwardjames [at] gmail.com>
Reply-To:  brianedwardjames [at] gmail.com
Subject: Re: Football Fields
References: <list-27402292 [at] prxy.net> <list-27406159 [at] prxy.net>
In-Reply-To: <list-27406159 [at] prxy.net>

We got that scheduled for next week, but I need to get some rough ideas 
figured out prior to that get together
Dale Farmer wrote:

> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
>
> Brian James wrote:
>
>> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
>> ---------------------------------------------------
>>
>> Okay, this may be a dumb question  but the only think I know about 
>> football is that it really messes up parking on campus during a home 
>> game.
>>
>> I know the football field is 100 yards long, however, how wide is it 
>> from side line to side line?
>>
>> Also, how big is the end zone?
>>
>> We are looking at doing an event on a field and I am trying to figure 
>> out how much space I have.
>>
>>
>> I do appreciate it!
>>
>>
>
>    Goo out and measure it.  and measure the access to the field as
> well.  Also go and have a good chat with the groundskeeper.
> Athletic field surfaces, whether fake or real grass have a lot of
> constraints that are not obvious.  Underfield drainage systems, 
> sprinklers, per square foot loading, and don't you dare leave
> any ruts or divots.
>
>   --Dale (who encountered the grass nazi... I came in second. )
>
>


-- 
Brian James



------------------------------

Message-ID: <43E95459.7090902 [at] gmail.com>
Date: Tue, 07 Feb 2006 21:15:53 -0500
From: Brian James <brianedwardjames [at] gmail.com>
Reply-To:  brianedwardjames [at] gmail.com
Subject: Counter Weighjt Systems

I think this has been discussed before, but I could not find stuff in 
the archives....

Is there a working acceptable standard for counterweight systems, or is 
is till references to the wire rope manufacturer and the hardware 
manufacturer?

-- 
Brian James



------------------------------

Date: Tue, 07 Feb 2006 21:36:09 -0500
Subject: Re: ERS Optics
From: "Curtis L. Mortimore" <clmortimore [at] bsu.edu>
Message-ID: <C00EC349.40D6%clmortimore [at] bsu.edu>
In-Reply-To: <list-27397732 [at] prxy.net>

Thanks for your help in clearing that up Frank. I must have been busy
banging rocks together trying to separate the neutral from the ground the
day they discussed optics in lighting class.

I respect your opinion and experience but I really dislike your arrogant
behavior.

Regards

-- 
Curtis L. Mortimore
Technical Director
Ball State University
Department of Theatre and Dance
Muncie, IN 47306
<clmortimore [at] bsu.edu>

> From: FrankWood95 [at] aol.com
> Reply-To: "Stagecraft" <stagecraft [at] theatrical.net>
> Date: Tue, 7 Feb 2006 14:57:34 EST
> To: "Stagecraft" <stagecraft [at] theatrical.net>
> Subject: Re: ERS Optics
> 
>> Does that make any sense?
>>  Is it any kind of correct?
> 
> No, and No.
> 
> Frank Wood


------------------------------

Message-ID: <43E9505A.9080304 [at] cybercom.net>
Date: Tue, 07 Feb 2006 20:58:50 -0500
From: Dale Farmer <dale [at] cybercom.net>
Organization: I'm working on that....
Subject: Re: CT
References: <list-27403966 [at] prxy.net>
In-Reply-To: <list-27403966 [at] prxy.net>

ladesigners [at] juno.com wrote:
> For info, archives & UNSUBSCRIBE, see <http://stagecraft.theprices.net/>
> ---------------------------------------------------
> 
> If Cirque has played in CT, you wouldn't be re-inventing the wheel.
> /s/ Richard

   Be prepared for really strict fire code, especially near
Hartford.  that's was where one of the really big circus
tent fires were back many years ago.  Hundreds of people
killed.

   --Dale

------------------------------

From: IAEG [at] aol.com
Message-ID: <2d4.275565b.311ab6c9 [at] aol.com>
Date: Tue, 7 Feb 2006 21:51:53 EST
Subject: Re: CT


In a message dated 2/7/06 9:42:29 PM, dale [at] cybercom.net writes:

<<    Be prepared for really strict fire code, especially near

Hartford.  that's was where one of the really big circus

tent fires were back many years ago.  Hundreds of people

killed.


   --Dale >>

Ringling, , Hartford, , , 1944   very well documented, , , 



very best,

Keith Arsenault
President
IAEG -  International Arts & Entertainment Group 
Tampa, Florida

------------------------------

In-Reply-To: <list-27403058 [at] prxy.net>
References: <list-27403058 [at] prxy.net>
Message-Id: <BB86590D-4AAD-45CB-B52B-922319AB57E6 [at] interstellar.com>
From: Jerry Durand <jdurand [at] interstellar.com>
Subject: Re: ERS Optics
Date: Tue, 7 Feb 2006 16:18:15 -0800


On Feb 7, 2006, at 11:30 PM, ladesigners [at] juno.com wrote:

> You might not be the first person to be carried kicking and  
> screaming to the Dark Side, but it could happen anyway. Know thy  
> enemy, if you hate M$, or at least be prepared to transition  
> gracefully to whatever OS that will allow you to get your work  
> done. THAT is the Bottom Line.
> /s/ Richard

I just try to give myself the worst of all worlds.  Our server is a  
Mac running OS X Server, but a lot of the configuration/maintenance  
requires working at the BSD prompt.  I have both Mac and Windows  
laptops, our office machines are Windows.  And...they all talk to  
each other!



------------------------------

Reply-To: <peter [at] scheuconsulting.com>
From: "Peter Scheu" <peter [at] scheuconsulting.com>
Cc: brianedwardjames [at] gmail.com
Subject: RE: Counter Weighjt Systems
Date: Tue, 7 Feb 2006 22:17:56 -0500
Organization: Scheu Consulting Services, Inc.
Message-ID: <!~!UENERkVCMDkAAQACAAAAAAAAAAAAAAAAABgAAAAAAAAAFIzFiG12TU6sr87xtBG2l8KAAAAQAAAA15Rc2oXwiE24vzLd/eyGFQEAAAAA [at] scheuconsulting.com>
In-reply-to: <list-27406807 [at] prxy.net>

Brian James wrote:

>Is there a working acceptable standard for counterweight=20
>systems

If you are asking about an "independent" (not a manufacturer's) =
nationally
recognized US standard, like an ANSI standard, officially there is none. =
But
one is being developed by ESTA's Technical Standards Program. It is
currently in the last stages of the public review process and should
(hopefully) soon be sent to ANSI for their blessing.

The UK has a standard. I'm not sure about other EU standards, though I
wouldn't be surprised if Germany had one.

Copies of the proposed US/ANSI standard should be available through =
ESTA.

Peter Scheu

Scheu Consulting Services, Inc.
www.scheuconsulting.com
Tel: 315.422.9984
fax: 413.513.4966


------------------------------

Message-ID: <1132.208.51.52.12.1139373129.squirrel [at] webmail.peak.org>
In-Reply-To: <list-27403091 [at] prxy.net>
References: <list-27403091 [at] prxy.net>
Date: Tue, 7 Feb 2006 20:32:09 -0800 (PST)
Subject: Re: ERS Optics
From: "Bill Nelson" <billn [at] peak.org>

>> Woah.  Now I'm getting confused.  I thought the secondary focus of the
>>  reflector was at (or near) the gate.  I don't see how it could be at
>> the gel frame.
>
> You and many others. The secondary focus of the reflector is a long way
> forward of that. You want the light that comes through the gate to arrive
> at the lens. Do an experiment. Pull the lens tube out, light up, and see
> where the image of the filament is.

I believe this is correct, but it has been a long time since I studied
optics. The illustrations I have seen in texts are all incorrect.

The reflector is only a bit over half an ellipse. As such, there is no way
that the light rays are focused back to the second focus. That would be
done by the part of the ellipse that is missing. Remove the lens set and
you will not find an image of the filament.

The purpose of the reflector is to get as much of the light as possible
directed at the gate. Any light off the reflector will be somewhat
converging, the light directly off the filament will be diverging. Some of
the direct light is lost - as it does not hit the gate.

The gate, iris, shutters and pattern are all placed as close to the lamp
as possible, to minimize light loss - which means that they cannot be any
closer than the front of the reflector.

You will probably find that the diameter of the reflector is larger than
the size of the gate. The relationship of this difference determines how
much more than half an ellipse is needed and thus how far the gate must be
from the lamp. The "exit" end of the reflector will be roughly the same
diameter as the gate - as it must be to concentrate the maximum of light
on the gate.

The lens system takes the fairly evenly illuminated gate area as the
"image" and - as happens with single convex lenses, inverts that image. If
there is more than one lens, the additional lenses are placed so they are
inside the second focus of that primary lens - so they do not reinvert the
image. They simply modify the effective focal length of that first lens.

I hope this helps, instead of confuses.

Bill




------------------------------

End of Stagecraft Digest #682
*****************************