Quote:
Originally Posted by Atmos
Following the chart that Ray posted the 35" recommendation is for 250 gain and not 50.. Typo?
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Colin, the f5 column for 20.5mag sky says 35" at Gain 50 on the chart Ray posted below.
Anyway i am reshooting tonight and will try a few different Gain settings between 50 and 139. It seems logical to assume that 120" might be a better choice at Gain 50. I might mess around with different sub lengths at Gain 50 and see what i can find out.