gain setting for deep sky

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betacapricorni
Posts: 98
Joined: Wed Apr 10, 2013 9:56 pm

Re: gain setting for deep sky

Post by betacapricorni » Mon Jun 24, 2013 6:09 am

@ Robbeh i think that a gain 5/100 is too low.... i'll try from 20 or 30.

@Sam with short but a lot of exposure there is a problem.... signal/noise ratio..... with an Halfa filter i need 4 minutes exposure..... it's a try if will be a bad try i'll use asi only with C9.25 and planets :D

PS i've a cooled ccd but has small sensor.... i'll use it for guiding :D

robbeh
Posts: 22
Joined: Wed May 01, 2013 2:17 pm

Re: gain setting for deep sky

Post by robbeh » Mon Jul 22, 2013 2:42 pm

Hi there, I did some 20 sec exposures on M57 at gain set to 10 in FC, sensor temp about 5°C (Peltier cooled), here is the result: http://www.astrobin.com/48971/ Still fiddling around to find the best gain/exposure setting for DS imaging :D

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