I am surprised that you got to mag 9 with a 20 inch scope. The exposure times must have been tremendous.
seeking an ADU of 30k assumed. The cosmic ray hits weren't an issue with that long of an exposure?
Peter
I am surprised that you got to mag 9 with a 20 inch scope. The exposure times must have been tremendous.
seeking an ADU of 30k assumed. The cosmic ray hits weren't an issue with that long of an exposure?
Peter
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