Double Cluster, with 135mm Canon L-lens at f/2.8 and Canon 20Da camera at ISO 800 for stack of 4 x 3 minute exposures. Taken Sept. 8, 2007. Simulates binocular field. Slightly soft focus.
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.
