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Caldwell 63 (NGC 7293) Helix planetary nebula

Also known as "The eye of God".

Date 12th September 2009
Telescope 250mm F4.8 Newtonian Reflector with MPCC coma corrector
Filter 12nm H-alpha (Astronomik)
Exposure (seconds) H-alpha: 3 x 600s, 8x300s (70 minutes)
Software CCDStack