Abell 39 is a ghosty planetary nebula and one of the few targets feasible from my backyard at this season when nights are so short. This planetary is thousands of light years away and is a sphere perhaps 5 light years across. See this great study from 2001 here.
This is just 9x1500" with the SXVF-H9, an Astronomik OIII filter, and the Synta-ONTC 8" Newtonian at f/4.95.
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