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dumb questions about flat frames
Dumb questions about flat frames I've been wondering for a while.
What if you want to take some at a star party and can't use white light? Can you gel your lighbox or whatever you use red? Do you need the light in all 3 RGB channels, or is one fine? I'm sure I read in one of the stacking software guides something about channels.
Taking flats the next day - does the orientation of the camera on the scope matter? Say you need to rotate your SLR during the night for composition. Can you use the same flats for different orientations? I wouldn't have thought so since the optical tube is round, but thought I'd ask anyway.
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