Gamma Cygni nebulosity aka the IC 1318 complex, plus the Crescent Nebula, NGC 6888 at right, in central Cygnus, taken on a superb night from home July 30, 2011. This is a stack of 5 x 12 minute exposures at ISO 800 with the filter-modified Canon 5D MkII and the Borg 77mm f/4.3 astrograph lens (300mm focal length), and using the IDAS V3 nebula filter. Orientation is tilted off true north at top (my usual orientation) to take in NGC 6888 and the little blue reflection nebulas at upper left.
Nebulosity in Cygnus, with 135mm telephoto lens at f/2.8 and Canon 5DMkII at ISO 400, for stack of 4 x 7 minutes + 4 x 4 minites at ISO640 for "glow layer" with Kenko Softon A filter. Some trailing from inacurrate polar alignment.
5-inch f/4.5 on May 20, 2006, with Canon 20Da at ISO400 for 12 minutes each. Autoguided with ST402ME camera and CCDOps software, as a first test of the technology. In camera dark frame. Stack of three exposures.
