[gregbradley]

My understanding is binning CMOS cameras is always done in software as the hardware doesn't accomodate binning (QHY294 is the exception).

When binned in software afterwards you don't get 4x the signal. Its way less. Some have reported no difference. There may be a slight gain but its not like a CCD that way.

If you binned it would be more for matching the seeing and smaller files.

Is there a SNR gain if you downsample? I have seen some nice images with a CDK14 and QHY600 in 2x2 binning. But I guess it was more to match the optics and seeing. You can also run these cameras in APSc mode with a ROI setting (I believe, but not sure how you do that). But the point is that is another way to get smaller file sizes for objects that don't need a larger field of view.

Greg.