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I’ve only had my 2600MC for 4 months and the performance in both Bortle 8 Sydney skyglow and my semi dark site Bortle 3 skies is tremendous
I’ve processed with and without darks and depending on conditions , the target object , sub exposure length and location, I could not see any significant improvement using darks ( although I capture them in any case )
I set my camera through Ascom and usually select Highest Dynamic Range ( Gain 0 offset 50, this camera does not have a “ Unity Gain” as such ) to achieve full well depth while sacrificing only a small amount of additional read noise
Dark current is extremely low even at my cooling setting of -15C
If your after a Cooled OSC camera with an AP-C sensor size then I can strongly recommend the ZWOASI2600MC
ZWO also make a full frame version the 6200MC ( 3.76uM pixel ) and a 2400MC (5.94 uM pixel size ) both extremely good specs on these cameras
Cheers
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