Double Cluster and Stock 2 cluster in Persesus. Taken Sept. 14, 2007 for stack of 4 x 4 minute exposures with 135mm L-series lens at f/2.8 and Canon 20Da camera at ISO 800. Simulates binocular field.
Double Cluster with 5-inch apo refractor at f/4.5 with feld flattener/compressor. With Canon 20Da camera at ISO400. Stack of three 8-minute exposures. Taken from home Nov. 20, 2006.
Double Cluster in Perseus, NGC 884 and NGC 869. Taken with 77mm f/4 Borg astrograph and Canon 7D at ISO400 for 4 x 8 minutes. Diffraction spikes added with AstronomyTools by Noel Carboni.
