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Gain/ISO
Anyone know if it’s possible to calculate the right amount of gain for the particular exposure time you’re trying to shoot? Or is it just trial and error? Seems time consuming to wait for each shot to finish before each adjustment.
If so any suggestions on where I should start? I’m using gain of 180 out of the max 240 for 5 min exposures at the moment which works well. I want to do 15 or 20 min exposures which show as a bright white screen at 180. My camera is a ASI071MC.
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