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Chuck Faranda
super member
Reged: 03/31/07
Posts: 140
Loc: Florida
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So, what missing from this diagonal, or what am I missing? All I see is the ground, LOL!
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Regards,
Chuck Faranda
See my vintage scopes at http://ccdastro.com/vintage.html
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sarastro
sage
Reged: 08/12/04
Posts: 402
Loc: Seattle
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That's a Herschel wedge for solar observation. Do not use it on it's own. It must be used with a ND 3.0 filter to be safe.
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Chuck Faranda
super member
Reged: 03/31/07
Posts: 140
Loc: Florida
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That's what I suspected. Thanks.
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Regards,
Chuck Faranda
See my vintage scopes at http://ccdastro.com/vintage.html
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oddog
member
Reged: 11/11/08
Posts: 72
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Thanks for asking this question Chuck, I was wondering about the hole as well. I am guessing most of the Sun's image/light goes out the hole, a bit goes up to the eyepiece?
Tom Duncan
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Chuck Faranda
super member
Reged: 03/31/07
Posts: 140
Loc: Florida
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Quote:
Thanks for asking this question Chuck, I was wondering about the hole as well. I am guessing most of the Sun's image/light goes out the hole, a bit goes up to the eyepiece?
Tom Duncan
Hi Tom,
Yes, that's why all I see the ground I suppose  In all my many years I never actually handled a Herschel wedge before this one. I was able to find some info on Robert's site, the ad calls the wedge a 'Sun prism' (see attached pic)
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Regards,
Chuck Faranda
See my vintage scopes at http://ccdastro.com/vintage.html
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clintwhitman
Caveman
Reged: 01/01/07
Posts: 2431
Loc: ValVerde CA(SoEasyaCavemanCanD...
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Chuck was that sold by Tasco?
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Clint&Debbie Whitman (aveman
1960s 6"F15 Jaegers-Unipons by John Pons on a Byers 812, 1947 4" F15 TINSLEY, 1965 10" F8 CAVE, 1950 5CM & 6.5CM Nippon Kogakus (the twins), 1960s UNITRONS a 152 restored a 160 numbered green lens original mint a 114 original 50s mint, 1950s UNITRON M100 100mm F15 OTA, WO 80mm Florite, ASTROPHYSICS 155 EDFS on LOSMANDY G11, a bunch of Tascos,Sears Mayflowers The list goes on Add infinitum.
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Chuck Faranda
super member
Reged: 03/31/07
Posts: 140
Loc: Florida
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Quote:
Chuck was that sold by Tasco?
Yes Cman, it's listed in their 1968 catalog as an 'accessory'.
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Regards,
Chuck Faranda
See my vintage scopes at http://ccdastro.com/vintage.html
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