Return-Path: X-Scanned-By: RAE MPP/Clamd http://raeinternet.com/mpp X-Scanned-By: This message was scanned by MPP Lite Edition (www.messagepartners.com)! X-Real-To: stagecraftlist [at] theatrical.net Received: by prxy.net (CommuniGate Pro PIPE 4.2.10) with PIPE id 35710744; Mon, 02 Oct 2006 03:02:14 -0700 X-Spam-Status: No, score=-0.8 required=5.0 tests=AWL,EMPTY_MESSAGE, NO_RECEIVED,NO_RELAYS autolearn=no version=3.1.5 X-Spam-Level: X-Spam-Checker-Version: SpamAssassin 3.1.5 (2006-08-29) on localhost X-ListServer: CommuniGate Pro LIST 4.2.10 List-Unsubscribe: List-ID: Message-ID: From: "Stagecraft" Sender: "Stagecraft" To: "Stagecraft" Precedence: list Subject: Stagecraft Digest #969 Date: Mon, 02 Oct 2006 03:01:33 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Disposition: inline X-TFF-CGPSA-Version: 1.4 X-prxy-Spam-Filter: Scanned For info, archives & UNSUBSCRIBE, see --------------------------------------------------- Stagecraft Digest, Issue #969 1. Rosco 1991 Heat Shield by "Bill Nelson" 2. Video Projection On Stage by "RICHARD FINKELSTEIN" 3. Re: Rosco 1991 Heat Shield by "Joel Harari" 4. Re: Rosco 1991 Heat Shield by "Bill Nelson" 5. Re: Rosco 1991 Heat Shield by Clive Mitchell 6. Re: Rosco 1991 Heat Shield by "Jason Salvatori" 7. Re: Rosco 1991 Heat Shield by FrankWood95 [at] aol.com 8. Re: Rosco 1991 Heat Shield by "Bill Nelson" 9. Re: Rosco 1991 Heat Shield by "Bill Nelson" 10. Re: Rosco 1991 Heat Shield by "Bill Nelson" 11. LDI 2006 by "Daryl Redmon" 12. Re: Rosco 1991 Heat Shield by "ladesigners [at] juno.com" 13. Re: Rosco 1991 Heat Shield by "Occy" 14. Re: Rosco 1991 Heat Shield by "Joel Harari" 15. Re: Rosco 1991 Heat Shield by Clive Mitchell 16. LDI 2006 Badge Stickers by "ladesigners [at] juno.com" *** 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. ---------------------------------------------------------------------- Message-ID: <1717.64.28.52.5.1159717517.squirrel [at] webmail.peak.org> In-Reply-To: References:

Date: Sun, 1 Oct 2006 08:45:17 -0700 (PDT) Subject: Rosco 1991 Heat Shield From: "Bill Nelson" When going through a collection of rolls of cinema gels, I found a roll of Rosco 1991 heat shield. Has anyone used it? It appears that it only blocks convected heat, not the IR and UV from a lamp. Does this significantly increase the life of saturated gels? Bill ------------------------------ Message-ID: From: "RICHARD FINKELSTEIN" Subject: Video Projection On Stage Date: Sun, 01 Oct 2006 12:26:21 -0400 Greetings you great experts. One area not so much in my expertise is on-stage video projection systems. We are a modest University now planning for a performing arts center and want to be able to use video on our stages for various uses including as a form of scenic projection full cyc. If any of you have recommendations of projectors that you have been satisfied with in such an application and would be willing to share the info, do send to me off-list (I'm out of town mounting a production and don't have easy access to the stagecraft list while I DO have access to e-mail) Thank you in advance Richard Finkelstein rfinkels [at] msn.com ------------------------------ From: "Joel Harari" Subject: RE: Rosco 1991 Heat Shield Date: Sun, 1 Oct 2006 10:18:49 -0700 Message-ID: <000001c6e57d$a95795c0$6401a8c0 [at] Tigger> In-Reply-To: At Disney we use it as part of a sandwich of gels. For our parade route fixtures we use UV shield on the outside, the color media in the middle, and then heat shield towards the lamp. This does increase our gel life, but if it is from the heat shield blocking the lamp's heat or the UV shield blocking the sun's rays I don't know. Hope this helps. Joel -----Original Message----- From: Stagecraft [mailto:stagecraft [at] theatrical.net] On Behalf Of Bill Nelson Sent: Sunday, October 01, 2006 8:45 AM To: Stagecraft Subject: Rosco 1991 Heat Shield For info, archives & UNSUBSCRIBE, see --------------------------------------------------- When going through a collection of rolls of cinema gels, I found a roll of Rosco 1991 heat shield. Has anyone used it? It appears that it only blocks convected heat, not the IR and UV from a lamp. Does this significantly increase the life of saturated gels? Bill ------------------------------ Message-ID: <2024.64.28.52.5.1159730459.squirrel [at] webmail.peak.org> In-Reply-To: References:

Date: Sun, 1 Oct 2006 12:20:59 -0700 (PDT) Subject: Re: Rosco 1991 Heat Shield From: "Bill Nelson" > At Disney we use it as part of a sandwich of gels. For our parade route > fixtures we use UV shield on the outside, the color media in the middle, > and > then heat shield towards the lamp. This does increase our gel life, but if > it is from the heat shield blocking the lamp's heat or the UV shield > blocking the sun's rays I don't know. Hope this helps. Thanks for the info. Rosco says that the heat shield is supposed to block convected heat and that it needs an air space on each side to work properly. A quick "hand heating" test shows that it does not block much, if any, of the heat from the lamp. You might try some instruments on your route that do not have the heat shield, and see if you still get the increased gel life. Bill ------------------------------ Message-ID: <9fO61pHx4BIFFw4O [at] ntlworld.com> Date: Sun, 1 Oct 2006 20:59:45 +0100 From: Clive Mitchell Subject: Re: Rosco 1991 Heat Shield References:

In-Reply-To: In message , Joel Harari writes >At Disney we use it as part of a sandwich of gels. For our parade route >fixtures we use UV shield on the outside, the color media in the >middle, and then heat shield towards the lamp. This does increase our >gel life, but if it is from the heat shield blocking the lamp's heat or >the UV shield blocking the sun's rays I don't know. Hope this helps. Have you tried dichroic filters? -- Clive Mitchell http://www.bigclive.com ------------------------------ Message-ID: <1caebf780610011514q9c5b137x29278c41e0752c09 [at] mail.gmail.com> Date: Sun, 1 Oct 2006 18:14:01 -0400 From: "Jason Salvatori" Subject: Re: Rosco 1991 Heat Shield In-Reply-To: References:

> When going through a collection of rolls of cinema gels, I found a roll of > Rosco 1991 heat shield. > Does this significantly increase the life of > saturated gels? I've used it effectively in 2 situations: 1 - in front of a scroller to help stop the scrolls from melting (it also helps the fans work more effectively, making a barrier between the lamp and the cooled portion of the scroller) 2 - in a lamp with a City Theatrical colour extender - the HS in the lamp's first frame, the gel in the extender's frame. HTH. Jason Salvatori Technical Director Vaughan City Playhouse ------------------------------ From: FrankWood95 [at] aol.com Message-ID: <4a4.85f9fbe.325198d2 [at] aol.com> Date: Sun, 1 Oct 2006 18:18:58 EDT Subject: Re: Rosco 1991 Heat Shield In a message dated 01/10/06 20:21:44 GMT Daylight Time, billn [at] peak.org writes: > Rosco says that the heat shield is supposed to block convected heat and > that it needs an air space on each side to work properly. A quick "hand > heating" test shows that it does not block much, if any, of the heat from > the lamp. Interesting. From its name, it ought to block the Infra-Red. But to do that, it needs to absorb it, and to dissipate it. The need for air spaces supports this view. On lanterns with lenses, it sounds not very useful. But on cyc floods and their friends, it may be. Disposing of the I-R from a lamp is hard. Selecon use dichroic reflectors, and a big heat sink on the back of the lantern, on which it is said that you can grill a steak. Most manufacturers rely on a convective airflow through the lamphouse, but this is fighing against the light leakage. > > You might try some instruments on your route that do not have the heat > shield, and see if you still get the increased gel life. Frank Wood ------------------------------ Message-ID: <2421.64.28.52.53.1159754339.squirrel [at] webmail.peak.org> In-Reply-To: References: Date: Sun, 1 Oct 2006 18:58:59 -0700 (PDT) Subject: Re: Rosco 1991 Heat Shield From: "Bill Nelson" > Disposing of the I-R from a lamp is hard. Selecon use dichroic reflectors, > and a big heat sink on the back of the lantern, on which it is said that > you can > grill a steak. Most manufacturers rely on a convective airflow through the > lamphouse, but this is fighing against the light leakage. Yep. The Shakespeare and Source Four instruments also use dichroic reflectors. The backs of the instruments get quite hot, even with the heat sinks, but the beam is much cooler. The reflectors seem to do a pretty good job. Bill ------------------------------ Message-ID: <2424.64.28.52.53.1159754481.squirrel [at] webmail.peak.org> In-Reply-To: References:

Date: Sun, 1 Oct 2006 19:01:21 -0700 (PDT) Subject: Re: Rosco 1991 Heat Shield From: "Bill Nelson" > I've used it effectively in 2 situations: > 1 - in front of a scroller to help stop the scrolls from melting > (it also helps the fans work more effectively, making a barrier between > the lamp and the cooled portion of the scroller) > 2 - in a lamp with a City Theatrical colour extender - the HS in the > lamp's first frame, the gel in the extender's frame. Thanks. Those are the two situations where I want to use it. Bill ------------------------------ Message-ID: <2427.64.28.52.53.1159754736.squirrel [at] webmail.peak.org> In-Reply-To: References:

Date: Sun, 1 Oct 2006 19:05:36 -0700 (PDT) Subject: Re: Rosco 1991 Heat Shield From: "Bill Nelson" >>At Disney we use it as part of a sandwich of gels. For our parade route >>fixtures we use UV shield on the outside, the color media in the >>middle, and then heat shield towards the lamp. This does increase our >>gel life, but if it is from the heat shield blocking the lamp's heat or >>the UV shield blocking the sun's rays I don't know. Hope this helps. > > Have you tried dichroic filters? You have to be careful with dichroics. They reflect the heat, rather than absorbing it. They are efficient enough that they can cause reflector damage due to the added heat load - if the intruments were not designed to handle it. Bill ------------------------------ Message-ID: <002701c6e5cf$cc4e43b0$6600a8c0 [at] yourfsyly0jtwn> From: "Daryl Redmon" Subject: LDI 2006 Date: Sun, 1 Oct 2006 20:06:46 -0700 I am looking to attend the trade show this year in Las Vegas (LDI 2006). Does anyone have tickets to the trade floor? Thanks Daryl Redmon Resounding Light ------------------------------ From: "ladesigners [at] juno.com" Date: Mon, 2 Oct 2006 03:10:11 GMT Subject: Re: Rosco 1991 Heat Shield Message-Id: <20061001.201046.15672.520063 [at] webmail31.lax.untd.com> One of the advantages of having a dichroic mirror set at a right = angle in the path between the light source with its elliptical = reflector and the lens assembly with color frame holder, is that the = heat reflected back from a dichroic color filter goes through the = right angle mirror rather than being reflected back to the = ellipsoidal reflector and the filament. For maximum heat dissipation, = it would seem that both the mirror and the elliptical reflector = should be dichroic with their respective venting and heat sinks as = far apart as practical. Since Selecon has a dichroic mirror and heat = sink only at the right angle point, I would like to ascertain the = weight/cost/benefit of throwing off heat at both points and having = the color frame holder be redesigned as a very efficient heat sink. = /s/ Richard _______________________ > Disposing of the I-R from a lamp is hard. Selecon use dichroic = reflectors, and a big heat sink on the back of the lantern, on which = it is said that you can grill a steak. Most manufacturers rely on a = convective airflow through the lamphouse, but this is fighing against = the light leakage. ___________________ Yep. The Shakespeare and Source Four instruments also use dichroic reflectors. The backs of the instruments get quite hot, even with the = heat sinks, but the beam is much cooler. The reflectors seem to do a = pretty good job. Bill ------------------------------ Message-ID: From: "Occy" References:

Subject: Re: Rosco 1991 Heat Shield Date: Sun, 1 Oct 2006 22:14:30 -0700 You should know Clive have done some install work for Disney, that they buy more diachronic than any one, I think. But the parade route gets changed in color at whim at who walked in the door that minute some times. Hey Joel just make sure the instrument get close up right so it doesn't fill up with water this as the we turning to the rainy season if you want call it that this year.. ----- Original Message ----- From: "Clive Mitchell" --------------------------------------------------- > > In message , Joel Harari > writes > >At Disney we use it as part of a sandwich of gels. For our parade route > >fixtures we use UV shield on the outside, the color media in the > >middle, and then heat shield towards the lamp. This does increase our > >gel life, but if it is from the heat shield blocking the lamp's heat or > >the UV shield blocking the sun's rays I don't know. Hope this helps. > > Have you tried dichroic filters? > > -- > Clive Mitchell > http://www.bigclive.com > ------------------------------ From: "Joel Harari" Subject: RE: Rosco 1991 Heat Shield Date: Mon, 2 Oct 2006 01:53:35 -0700 Message-ID: <000301c6e600$3f6d3d30$6401a8c0 [at] Tigger> In-Reply-To: Stupid person + rock + dichroic = glass on ground. Joel -----Original Message----- From: Stagecraft [mailto:stagecraft [at] theatrical.net] On Behalf Of Clive Mitchell Sent: Sunday, October 01, 2006 1:00 PM To: Stagecraft Subject: Re: Rosco 1991 Heat Shield For info, archives & UNSUBSCRIBE, see --------------------------------------------------- In message , Joel Harari writes >At Disney we use it as part of a sandwich of gels. For our parade route >fixtures we use UV shield on the outside, the color media in the >middle, and then heat shield towards the lamp. This does increase our >gel life, but if it is from the heat shield blocking the lamp's heat or >the UV shield blocking the sun's rays I don't know. Hope this helps. Have you tried dichroic filters? -- Clive Mitchell http://www.bigclive.com ------------------------------ Message-ID: Date: Mon, 2 Oct 2006 10:24:21 +0100 From: Clive Mitchell Subject: Re: Rosco 1991 Heat Shield References:

In-Reply-To: In message , Joel Harari writes >Stupid person + rock + dichroic = glass on ground. Ah. Prefer air rifles myself. :) -- Clive Mitchell http://www.bigclive.com ------------------------------ From: "ladesigners [at] juno.com" Date: Mon, 2 Oct 2006 09:51:41 GMT Subject: LDI 2006 Badge Stickers Message-Id: <20061002.025154.15672.520477 [at] webmail31.lax.untd.com> Yes, those who bought booth space have a freebie code that you enter = on the online registration forms. My question is: Who, at what booth, = is handing out the Official Stagecraft List badge stickers this year? /s/ Richard _________________________ I am looking to attend the trade show this year in Las Vegas (LDI = 2006). Does anyone have tickets to the trade floor? Thanks Daryl Redmon Resounding Light = ------------------------------ End of Stagecraft Digest #969 *****************************