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I suppose it all depends on the resolution that you’re after. They both have the same size chip, QHY22 has 4.54 micron pixels while the QHY23 has 3.69 microns. They both have about 75% QE and I believe the QHY23 May have a fraction lower read noise.
The main question you need to ask is:
Do I want an image scale of 1.38 or 1.7?
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