View Single Post
  #6  
Old 26-06-2012, 07:37 AM
avandonk's Avatar
avandonk
avandonk

avandonk is offline
 
Join Date: Aug 2005
Location: Melbourne
Posts: 4,786
It just keeps getting better hey Scott!

From my measurements the 5DH takes about thirty minutes to reach equilibrium due to the sensor heating with constant exposures. This results in the first couple of frames having holes as the master dark subtracts too much.

It is the same if taking a set of darks, do not use the first three unless the camera has been exposing.

The larger sensor actually gets to about 17C above ambient with continuous exposures. Even then the signal to noise is still impressive.

Your 10 inch mirror is really showing it's quality now Scott. A fine image of a very dim object. The dark dust has texture. The stars are very good to the corners as well.

Bert

Last edited by avandonk; 26-06-2012 at 07:52 AM.
Reply With Quote