Quote:
Originally Posted by alpal
Hi Greg,
"I think you meant;
The reason shorter exposures works with CMOS is because the read noise is a fraction of CCDs so
you get your signal above the read noise much sooner than you will with CCD. "
Also - if the read noise is well below the sky noise from
a suburban location then I don't see how a long 20 minute subframe
would make any difference using CMOS?
cheers
Allan
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Yes quite right.
Well you probably could but I think you'll find that often bright areas will blow out due to the super high QE of these sensors.
Greg.