Thread: Helix Ha
View Single Post
  #17  
Old 01-09-2022, 10:24 PM
Peter Ward's Avatar
Peter Ward
Galaxy hitchhiking guide

Peter Ward is offline
 
Join Date: Dec 2007
Location: The Shire
Posts: 8,478
Quote:
Originally Posted by Bassnut View Post
But what is your sub exposure time?. I suspect if you exposed long enough to overcome read noise the diff with CMOS becomes irrelevant and you could go arguably deeper with a CCD.
Ten minutes and despite that, with CMOS, fixed pattern noise eventually dominates over extremely low signal noise (read noise is moot here)

As far as I can tell, there is no fix.

CCD's for very low flux targets would be my tool of choice.

I still have a perfectly good KAF16803 CCD based camera....and suspect for those wanting go uber-deep, these sensors will become very desirable and rare birds for those who want to push the envelope.

I'm hopeful CMOS sensors will have all of their advantages and none of their disadvantages in time.

Just not quite there yet.
Reply With Quote