Quote:
Originally Posted by Peter Ward
But with Mikes HOG image (...no offence Mike  ) The background levels are so painfully close to the signal that it is very hard to control them without altering the signal data. So you make a call, and often leave it as is. While I try to avoid getting there, I see no problem with this, so long as the overall signal makes the noise trivial.
Cheers
Peter
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Absolutely Peter, you're spot on there. This was taken from a suburban sky over long periods and large movements over the sky so subtle gradients through the very faint nebulosity were inevitable. To have worked harder on these gradients would indeed have altered the object signal too much for my liking.
Mike