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M27 - The Dumbbell Nebula


From the author of   Sizing Up The Universe

M27

21:26 EDT Aug 14, 2015 and 21:14 EDT July 23, 2006.
Starlight Express SXV-H9 on 10" RCOS at f/9.
Ha = 120 min, O-III = 168 min
R = Ha, G = O-III, B = O-III (guided 4-minute subexposures).
Richardson-Lucy deconv, Neat Image, Stretch in Photoshop.


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M27

21:14 EDT July 23, 2006.
Starlight Express SXV-H9 on 10" RCOS at f/9.
Ha = 64 min, O-III = 96 min
L = Ha+OIII, R = Ha, G = O-III, B = O-III (guided 4-minute subexposures).
Richardson-Lucy deconv, Gamma stretch.

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