View Single Post
  #33  
Old 25-11-2009, 08:12 AM
multiweb's Avatar
multiweb (Marc)
ze frogginator

multiweb is offline
 
Join Date: Oct 2007
Location: Sydney
Posts: 22,062
Quote:
Originally Posted by leinad View Post
Becoming a new owner of a QHY8 myself, when its mentioned the maximum pixel value should be between 400-1000, is this best to be closer to 400 as can be achieved ?

I followed the instructions and was able to achieve Gain 2 Offset 109 of what I thought was reasonable.
See screenshot...

I noticed I have a few dead pixels? White dots seen when the image is dark.
Get your gain to 0 or 1. The offset will determine the position of your histogram in respect to the left side. Varies on cameras and sky conditions. I use 60 to 70, that gives me a sky background of 900-1000ADU typically. You want that margin on the left, no more no less. 1000ADU is comfortable to play with. No clipping.

Last edited by multiweb; 25-11-2009 at 08:24 AM. Reason: spelling
Reply With Quote