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Old 08-06-2016, 03:19 PM
glend (Glen)
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glend is offline
 
Join Date: Jun 2013
Location: Lake Macquarie
Posts: 7,033
Quote:
Originally Posted by Shiraz View Post
FYI, the attached table shows predicted optimum settings for my 250f4 system for a 3hour broadband galaxy imaging session under fairly dark sky. Early testing shows that this may be slightly optimistic - 1 minute subs gave better results than 30 seconds at gain 100 in the real world.

The most interesting outcome is that the dynamic range holds up well up to gain 100.
Ray perhaps i should drop my gain setting from unity ( g= 139) to g=100. I am shooting 60" subs on my test targets (nebs and such).
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