Quote:
Originally Posted by troypiggo
I have a lightbox for flats, and while it does have a brightness adjustment, even at low settings I only need pretty short exposures. Read somewhere that it is good to get flat exposures a few seconds long though, to do with the shutter affecting exposure and the longer the exposure, the less it will come into play? That makes sense to me, but I don't know how fast this shutter is.
On a DSLR you can take shots 1/1000s and the shutter isn't seen. Wondering how fast these CCDs can be?
I did some test flats .1s and I think faster, couldn't notice any visible issues. Am I missing something?
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I have a bright EL sheet that really dims if I feed it 6V instead of 12V. Have you tried limiting the voltage on your lightbox? Then the exposure time is a moot point as you can reach the target ADU easily.