The large dark nebula Barnard 144 surrounds Eta Cygni, the bright star in the middle of this image.
Date: October 9, 2012
Constellation: Cygnus
Location: Dominion Astrophysical Observatory, Victoria, BC
Optics: Canon EF 135mm f/2L USM
Mount: Paramount ME, guided using PhD
Camera: Canon EOS 5D Mark III
Exposure: 30 light frames of 120 seconds, f/2, ISO 800
Processing: Light frames calibrated with dark and flat frames in ImagesPlus. Light frames normalized and combined using MinMax Excluded. Image cropped.