NGC 6888, the Crescent Nebula in Cygnus, a bubble of gas blown from a superhot “Wolf-Rayet” star at the end of its normal life. Above, is a general field of emission nebulosity associated with the star Gamma Cygni in central Cygnus. This is a stack of 5 x 8-minute exposures with the Quattro 20cm astrographic Newtonian reflector at f/4 with its coma corrector. The camera was the filter-modified Canon 5D MkII at ISO 800. Shot from home Oct 13, 2015, using the Mach 1 mount and SG-4 Autoguider.
NGC 6891 Planetary Nebula in Delphinus a planetary only 12 arc seconds across so tiny at this scale with the 130mm f/6 refractor. Taken with the Canon 7D for a stack of 4 x 8 minute exposures at ISO 800.
