NGC 7023
Iris Nebula
Date: 9 and 11 October 2010, 29 December 2010, 23 and 25 September 2011
Optics: Orion AG14 Astrograph f/3,8
Camera: Canon EOS 5D Mark II, unmodified
Exposure: Total 710 min; 10 and 15 min single exposures at ISO 1600 and 200, respectively
Location: Hohe Asch Observatory
Image processing with Fitswork and Photoshop CS5
A.S.