View Single Post
  #2  
Old 01-02-2014, 06:36 PM
Bassnut's Avatar
Bassnut (Fred)
Narrowfield rules!

Bassnut is offline
 
Join Date: Nov 2006
Location: Torquay
Posts: 4,824
WHAT!. A typical Ha 3nm 40min bin 1 sub on my SBIG gives 1100 odd ADUS back ground uncalibrated and 50 after calibration. Bias subs show about 1000 ADUs. Are you saying I need to increase subs to several hrs for best S/N?.

Have I missed something?, my 50 ADU background after calibration, is that what you mean by "above bias"?.

What about blooming on an NABG cam!. Several Hr subs would be unusable?.
Reply With Quote