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 and Gamma Cygni area in Cygnus, with stack of 4 x 12 minute exposures with TMB 92 mm apo and Borg 0.85x flattener/reducer for f/4.6 and Canon 5D MkII at ISO 400. Images combined with Photoshop Statistics: Mean Combine and auto-align.
A 2-layer stack (Mean Combine) of 12 min exposures at ISO 400 with Canon 20Da, with TMB 92mm at f/4.6 with Borg flattener. Shot on same night with 5DMkII as well for comparison pair.
