This is M13 again. I spent most of the night on something else, but it seemed a shame to waste the darkness when I could still be shooting, so I took 3x360" on M13. It's not deep. One can barely spot IC 4617, but this was a pretty good test. I took this picture through an Astronomik CLS filter, a Baader MPCC (the first version), and the 203mm f/4.95 Synta-ONTC Newtonian.
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