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Yeh I’ve used both Flat darks and Bias to calibrate my Flats with the 2600’s and yes I’ve read lots of information on so many forums and reviews on how Bias will just introduce more unnecessary noise into your image when using CMOS.
I have tested both alternatives and can’t find any visual discernible difference ( my eye sight is not the greatest) but that doesn’t mean you shouldn’t use Flat Darks
Technically Flat Darks are what’s best to use with CMOS
The thermal dark current noise in the 2600’s is so damn minimal it’s ridiculous , I’m sure ZWO are working on the next generation cameras ( 3600 series ???)
My biggest issue with noise in general is imaging under B8 Skies in Sydney ( 6 to 8 months of the year ) Been down at my Dome ( B3 skies ) for a week now with cloudy days and nights , another week or so here and back to the madhouse that’s Sydney.
Martin
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