Stack of two 5 minute exposures at ISO400 with Canon 20Da camera, and Astro-Physics 4-inch apo refractor at f/4.5. Taken August 1, 2005. Second layer median filered and gaussian blurred to add glows around brighter stars, and mixed in with Lighten mode at 100%, and contrast boosted by +50 to brighten stars.
NGC 6820 nebula, with embedded small cluster NGC 6823, plus to the right the cluster NGC 6830, all in Vulpecula. Stack of 4 x 12 minute exposures with TMB 92mm apo and Canon 5D MkII at ISO 400 and Borg 0.85x flattener/reducer for f/4.6
Nebula (NGC 6820) and cluster (NGC 6823) in Vulpecula. Taken Aug 1, 2005 with 4inch Astro-Physics Traveler at f/4.5 with Canon 20Da camera at ISO800. Additive stack of two 8-minute exposures to boost nebula brightness, plus average stack (Normal @ 50%) of two other exposures to smooth background noise.
