Barnard 86 dark nebula and NGC 6520 open cluster in the Sagittarius Starcloud. With the AP 105mm refractor at f/6 and Canon 5D camera.
5-inch f/4.5 Astro-Physics apo refractor, with Canon 20Da at ISO400 for 14 minutes x 4 images stacked, averaged. Taken from from Oct. 24, 2006.
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.
