Quote:
Originally Posted by RickS
The quote from Stan above was talking about total exposure time, not individual subs so I don't see any inconsistency?
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Ah ok, given the context of the post I had assumed it was individual sub duration.
Quote:
Originally Posted by RickS
If your minimum target value isn't anything slightly higher than the background then you're not trying hard enough 
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Good point... I had a look at the faintest part of NGC 300 that I could distinguish from the background and there was bugger all difference; it was closer than I thought.