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Camera read noise is important when comparing the same sensor from different manufacturers. My QHY22 was a brilliant camera but the ML694 is better and it has the cost to go with it. I simply used the example of read noise because FLI routinely does it better with THE SAME SENSOR.
The CMOS sensors aren’t quite there yet, not the mono ones anyway. I know I’ll have to part with my QHY163M as the microlens diffraction is a real issue with the RH200. On my Sky Rover it only happens on the bright bright stars but on the RH200 with the steepness of the light cone (F/3), I get it on even medium brightness stars in RGB.
If you take the ASI1600/QHY163M our you’re left with the QHY183M which I am thinking about getting for galaxy work but it certainly isn’t a wide field sensor; small sensor size. All of the larger CMOS chips out there are OSC. The CMOS Revolution is still quite some time away.
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