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Old 05-01-2009, 11:01 AM
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Quark (Trevor)
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Join Date: Apr 2008
Location: Broken Hill NSW Australia
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Quote:
Originally Posted by kinetic View Post
Hi Trev,

Here is an old bookmark I have which gives a good, overall
theory of Darks , Bias and Flats , with some examples of why
you need to do them. (examples of Dust bunnies, vignetting etc)

http://www.aavso.org/observing/progr...manual/3.shtml


Hope this helps,

Regards,

Steve
Thanks Steve,

A very informative and graphic link, a picture really is worth a thousand words.

Regards
Trevor
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