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I’ve had my 2600MC ( same sensor as the 2600MM ) for nearly 2 years now under heavy LP Bortle 7/8 in Sydney and Bortle 3 at my retirement getaway on the south coast NSW and run the camera via Ascom driver in APT. I mostly use Gain 0 ( highest dynamic range) to take advantage of full well and 14 stops of DR. I use use Gain 100 ( Lowest read noise ) sometimes in Sydney to reduce some noise. Check out the performance charts for this camera on the ZWO site , they provide good information. I image both in broad band and narrowband
OSC and use Flats and Bias frames only for Calibration which provides a clean flat even field.
I have no issues with noise in my images at all !!!! Even at Gain 0
I use DSS to stack my Fits and post process in Startools.My DSS stacked fit file is loaded into Startools as purely linear ( no tweaks)
Camera is cooled to -10C more than adequate and I dither every frame
Attached is my procedure for DSS
Maybe give Startools a trial , totally different concept ( signal tracking engine ) of processing but gives Pixinsight a run for its money and you can generally produce a good image in less than an hour
Cheers
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