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Scaling darks is a bit lazy. If you standardise your subexposure lengths and temperature to just a few like 10mins, 15 or 20 or even just 10 and 20minutes its only 2 sets of darks.
My camera can hit -30C all year round so I changed my standard temp from -35C to -30C (it would not hit -35C on some summer nights).
If you get a cloudy night its a perfect time to do darks so its not a lost night.
But start using scaled darks on a scope that uses correctors etc then you are going to get poor results from flats.
My Proline doesn't even really need darks. Just a few hot pixels I could PS out. A few times I didn't use darks when flats weren't needed either (nicely illuminating scope).
Greg.
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