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M57 Ring Nebula

M57 Ring Nebula

Planetary Nebula in Lyra. 

 Date18th September 2012
 Exposure9x300s Ha, 9x300s O[III]
 CCD CameraST10
 Telescope250mm F4.8 Newtonian Reflector with MPCC coma corrector
 MountAP1200
 SoftwareMaximDL, CCDStack, PixInsight