rasskin Posted January 24, 2009 Share Posted January 24, 2009 Hello. I was just considering the use of a glass prismatic and upon investigation learned that they are only available in 'B' size. This isn't a problem as such, but as they are not intended for use in lanterns over 750 Watts I am left wondering what options that gives me. Thusfar I have only managed to find the celecon Pacific as an option. Is anyone aware of a 750Watt (or less) profile which will accept a 'B' size Gobo? Seems a little odd that Rosco would produce an item that can only be used in one manufacture's product. Sam Rendell Link to comment Share on other sites More sharing options...
bartleyni Posted January 24, 2009 Share Posted January 24, 2009 Hello. I was just considering the use of a glass prismatic and upon investigation learned that they are only available in 'B' size. This isn't a problem as such, but as they are not intended for use in lanterns over 750 Watts I am left wondering what options that gives me. Thusfar I have only managed to find the celecon Pacific as an option. Is anyone aware of a 750Watt (or less) profile which will accept a 'B' size Gobo? Seems a little odd that Rosco would produce an item that can only be used in one manufacture's product. Sam Rendell ETC Source 4 comes in 575W & 750W. Strand SL The Gobo section of the Wiki should help you out: http://www.blue-room.org.uk/wiki/Gobo Nick Link to comment Share on other sites More sharing options...
rasskin Posted January 24, 2009 Author Share Posted January 24, 2009 Thanks very much. :) Link to comment Share on other sites More sharing options...
Neil Hampson Posted January 26, 2009 Share Posted January 26, 2009 Unless they have been changed recently, the 750W max. was for conventional fixtures, the box they come in also mention that the glass can withstand use in a 1000W 'Cool Beam' unit, citing the SL (600W), Source4 (750W) and Pacific (1KW) as examples. all of which take a B size gobo. Check with Rosco first, it may have been changed for a reason. Link to comment Share on other sites More sharing options...
Trunker Posted January 26, 2009 Share Posted January 26, 2009 You should be fine in a 1k Harmony for a couple of minutes, but I wouldn't leave it on longer than 3-4 minutes with a 15 minute cooling period in between. This would be your head, but I have been known to get away with this. Link to comment Share on other sites More sharing options...
c0astman Posted January 29, 2009 Share Posted January 29, 2009 I'm looking at using one in a Strand Prelude 15/30. I think that has a 650w lamp in it. Either that or a Source 4 Junior zoom with a 575w lamp. Link to comment Share on other sites More sharing options...
jonathanhill Posted January 29, 2009 Share Posted January 29, 2009 I'm looking at using one in a Strand Prelude 15/30. I think that has a 650w lamp in it. Either that or a Source 4 Junior zoom with a 575w lamp. I would still be careful, although the Prelude use a 650W lamp, it does not have a dichroic ilter that allows a lot of heat from the beam. That gate still gonna get real hot. Personally I would use a Source 4. But that is cos they are the best. Link to comment Share on other sites More sharing options...
Neil Hampson Posted January 29, 2009 Share Posted January 29, 2009 I have used glass gobos in a Prelude without any issues. As you state in your first post, Rosco have rated the gobo for fixtures of upto 750W, and unless there is a further statement to say that rating only aplies to 'coolbeam' lanterns this rating covers all generic fixtures from the Patt.23 onwards. Link to comment Share on other sites More sharing options...
c0astman Posted January 29, 2009 Share Posted January 29, 2009 I would still be careful, although the Prelude use a 650W lamp, it does not have a dichroic ilter that allows a lot of heat from the beam. That gate still gonna get real hot. Personally I would use a Source 4. But that is cos they are the best. Thats useful to know. The supplier didn't warn me off using the Prelude. The Junior Zoom it is! Link to comment Share on other sites More sharing options...
jonathanhill Posted January 29, 2009 Share Posted January 29, 2009 I would still be careful, although the Prelude use a 650W lamp, it does not have a dichroic filter that allows a lot of heat from the beam. That gate still gonna get real hot. Personally I would use a Source 4. But that is cos they are the best. Thats useful to know. The supplier didn't warn me off using the Prelude. The Junior Zoom it is! Not sure but I don't know if you can get a B size holder for a S4 Junior, thought that they only used E size (or M size, its been a while). Link to comment Share on other sites More sharing options...
Trunker Posted January 29, 2009 Share Posted January 29, 2009 The only take an M size gobo holder, but I have got an M size holder that takes a B size gobo. Can you get these for a Source4? Link to comment Share on other sites More sharing options...
c0astman Posted January 30, 2009 Share Posted January 30, 2009 I would still be careful, although the Prelude use a 650W lamp, it does not have a dichroic filter that allows a lot of heat from the beam. That gate still gonna get real hot. Personally I would use a Source 4. But that is cos they are the best. Thats useful to know. The supplier didn't warn me off using the Prelude. The Junior Zoom it is! Not sure but I don't know if you can get a B size holder for a S4 Junior, thought that they only used E size (or M size, its been a while). You're right. S4 Juniors take M size. No I won't look daft in front of the supplier! Thanks Johnathan Link to comment Share on other sites More sharing options...
jonathanhill Posted January 30, 2009 Share Posted January 30, 2009 Fairly sure that a B size metal gobo holder for S4 is a GH59. There used to be a list on the DHA website of all the gobo holders in the world. Link to comment Share on other sites More sharing options...
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