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Old 09-12-2018, 06:21 PM
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multiweb (Marc)
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multiweb is offline
Join Date: Oct 2007
Location: Hinchinbrook
Posts: 17,834
Originally Posted by raymo View Post
I have always noted that some imagers take subs of 3,5,10 minutes, or even
longer. How do they do that? The max I can go before blowing out pretty
much everything is about 100- 120 secs. I have a pretty good sky at Bortle 2 to 3. I had the same limitation when using my 8" f/5 Newt as I now do using just a DSLR and a lens.
Depends on what you're imaging, if it has a brigh core or not, your conditions at the time, windy or not, airplane flight path, etc... then you weigh in the odds of something possibly going wrong in 5, 10, 15 or more minutes, how many beers you had, etc...
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