Quote:
Originally Posted by Camelopardalis
Thanks Ray, it was your thread that originally got me thinking and inspired me to ask more 
I haven't yet found a way to analyse the raw pixel values in the raw files, but just going on PI's normalised values, but loading up one of the raws I took fresh this past weekend at a dark site and a bias file (and debayering both), the background values seem to hover around 0.033-4 whereas the bias file is 0.031...so it looks like exposing to about 25% just eeks it past the line. So if I understand it correctly it looks like I should expose for just a little longer from a dark site.
This is ignoring the dark current of course...which in the warmer evenings is noticeably higher than on the colder nights  |
sounds like a plan to me Dunk - a bit more exposure may be useful provided the dark noise does not get in the way.
High dark current is not
all bad - if you have a lot of noise, you can use shorter subs because the results will be so bad that it doesn't make any difference
