Here is M57 with 1200" subs. Through an Astronomik CLS filter from my site, 1200" subs put the nebula itself at 75% to the right on the histogram. Much more exposure would have started whiting out the primary target. Anyway, M57 is a lot of fun. You can see in this image a hint of the expanded shell if your monitor is set to show relatively dim things. This is 12x1200" through the 203mm Synta ONTC Newtonian at f/4.9 and an Astronomik CLS filter with the Atik 460EXC camera.
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