Quote:
Originally Posted by rogerco
Beginners question -
Why take multiple sub frames, why not just take one and duplicate it and then stack the copies ?
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I wish we could Roger, it would Astrophotgraphy soooo much easier but you need to record as much data as possible during an exposure. Recording faint objects in the night sky is all about the signal-to-noise ratio. Meaning that if you only record one sub frame and stack a couple of duplicates together the resulting image will have a very low signal-to-noise ratio.
The more Subs exposures the better.
