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what is a diascope?
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pickles View Drop Down
Optics GrassHopper
Optics GrassHopper


Joined: November/06/2009
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Posts: 2 		Post Options Post Options   Quote pickles Quote  Post ReplyReply Direct Link To This Post Topic: what is a diascope?
    Posted: November/06/2009 at 09:06
I'm new to optics so bear with me, but what is a diascope?

I've looked everywhere for some form of definition and finally had to register here just to ask since I can't find any info aside from product descriptions, none of which say what the heck makes a diascope a diascope.

Thanks for your help!
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JGRaider View Drop Down
Optics Journeyman
Optics Journeyman


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Posts: 352 		Post Options Post Options   Quote JGRaider Quote  Post ReplyReply Direct Link To This Post Posted: November/06/2009 at 09:14
A diascope Is Zeiss' brand of spotting scopes.  Search on this site for more info.
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pickles View Drop Down
Optics GrassHopper
Optics GrassHopper


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Posts: 2 		Post Options Post Options   Quote pickles Quote  Post ReplyReply Direct Link To This Post Posted: November/06/2009 at 09:38
I have searched on this site and nobody says what one is. I assume Zeiss is calling them diascopes for a reason, right?
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JGRaider View Drop Down
Optics Journeyman
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Posts: 352 		Post Options Post Options   Quote JGRaider Quote  Post ReplyReply Direct Link To This Post Posted: November/06/2009 at 11:29
Try this link, or copy and paste:

http://swfa.com/Zeiss-Spotting-Scopes-C501.aspx

Edited by JGRaider - November/06/2009 at 11:30
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jonoMT View Drop Down
Optics Master
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Posts: 1200 		Post Options Post Options   Quote jonoMT Quote  Post ReplyReply Direct Link To This Post Posted: November/06/2009 at 12:20
Because they were designed by Portuguese optics engineer Jose Dias to be used during the day (dia) and were based on research performed on dialysis patients. Bandito
So here's a nickel on the grass to you - your spirit, enthusiasm, sacrifice and courage - but most of all your friendship. Yours is a dying breed. When you are gone, the world will be a lesser place.
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Terry Lamb View Drop Down
Optics Apprentice
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Posts: 123 		Post Options Post Options   Quote Terry Lamb Quote  Post ReplyReply Direct Link To This Post Posted: November/06/2009 at 13:22
And, furthering research done by JonoMT above, I found the following quote from a patent which definitely clears it up for me:
   

"diascope switch means operably connected with an output of said comparison amplifier means for selectively by-passing said iris driving voltage to ground, for disabling said iris driving circuit."
Terry Lamb
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zeissoem2 View Drop Down
Optics Apprentice
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Posts: 85 		Post Options Post Options   Quote zeissoem2 Quote  Post ReplyReply Direct Link To This Post Posted: November/21/2009 at 01:52
My simple thoughts is that it is maybe a Dia(lyt roof prism) scope
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