14 Jun
2006
14 Jun
'06
4:28 p.m.
Tyler, Now that we're picking your well-stocked brain, can you talk a bit about stacking vs. long exposure? I understand that this beautiful view is a stack of several 20-minute shots. I assume a whole bunch of 20-minute pictures will still result in a final view that is not overexposed because what you're doing is eliminating noise. But 20 minutes still seems like a long exposure. I've had a galaxy overexpose in (I think) five or ten minutes. Is the nebula pretty dim? And just for discusison, what do you think a view of four hours, without stacking, would look like? Thanks, Joe