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The asi2600 CMOS is hitting 80% qe for Ha, and 50k full well, but yes tiny pixels. I’ve never seen a side by side comparison with the st8 (or eqivalent CCD), but I’m assuming if you limited your sub exposures and binned, you would still be in front. (Assuming cost and availability are ignored)
Fred- I’m interested to know why you’d recommend such small sensors for long-fl scts? Surely with a good reducer/corrector such as the offerings from Starizona it would be much preferable to go as large as possible? I was imaging
Ngc55 the other night with my c14 and I could only JUST fit it into the fov of my apsc size sensor (at f7 with Starizona SCR LF reducer). Fairly well corrected over entire field, but any sensor smaller for me would just be super frustrating.
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