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## page was renamed from HowtoSkyflat
= How to take Skyflats =

== Quick reference ==

 * Target counts: 30k..40k
 * Any exposure time > 0.25s is fine, since shutter is photometric 



== References ==

 * http://physics.bgsu.edu/~layden/A309/ccd_obs_extras.htm

 * http://regulusastro.com/blog/?p=124