ICEINSPACE
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Moon Phase
CURRENT MOON
Waning Gibbous 71.7%
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05-11-2007, 05:09 PM
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Astrolounge
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Join Date: Feb 2005
Location: monbulk-vic
Posts: 2,010
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3.3 Reducer
l know these are aimed at CCD photography but has anyone tried one on a Schmitt Cass with a DSLR?
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05-11-2007, 06:27 PM
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Registered User
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Join Date: Feb 2005
Location: Launceston Tasmania
Posts: 9,021
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I believe they will not work successfully, too much vignetting, the area of a webcam sensor (LPI, Neximage etc) is much smaller that of a DSLR sensor.
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05-11-2007, 06:44 PM
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Astrolounge
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Join Date: Feb 2005
Location: monbulk-vic
Posts: 2,010
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thanks Phil.
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05-11-2007, 06:57 PM
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Narrowfield rules!
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Join Date: Nov 2006
Location: Torquay
Posts: 5,065
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Tried it, woefull, made for tiny web cam size chips.
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05-11-2007, 07:08 PM
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1¼" ñì®våñá
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Join Date: Nov 2006
Location: Sydney
Posts: 1,845
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From the top of my head a 3.3 reducer will work with CCD/CMOS chips up to about 1cm in size. With a DSLR, you will have to crop out about 75% of the pic to get something decent as the chip is much larger than this.
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05-11-2007, 07:48 PM
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Registered User
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Join Date: Feb 2006
Location: Perth, Western Australia
Posts: 4,563
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No. My 3.3 reducer barely works with my ST7, so I stick to the 6.3. I'd hate to see what it does to a DSLR's FOV.
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05-11-2007, 07:49 PM
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![[1ponders]'s Avatar](../vbiis/customavatars/avatar45_9.gif) |
Retired, damn no pension
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Join Date: Nov 2004
Location: Obi Obi, Qld
Posts: 18,778
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If it is anything like the NextGen 3.3 then an 8mm diagonal chip is about all you will get to use without problems an even that might be stretching is.
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