The Ring Nebula (M 57) by Dietmar Hager
Submitted by AstroPhoto Insight on Wed, 06/25/2008 - 17:50.
9 " TMB folded Apo f/9
StarlightXpress SXVF H16
11.3h total exp-time
1.7 hours - luminance; 1x1 bin 5 darks; 3.6 hours R,G,B 2x2 bin. 6 darks for 2x2bin; 6 hours 2x2 H-alpha
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