NGC 6905, the Blue Flash Nebula in Delphinus, a planetary 36 arc seconds across, so tiny at this scale with the 130mm f/6 refractor. Taken with the Canon 7D for a stack of 4 x 6 minute exposures with the Canon 7D at ISO 800. Taken from SSSP 2012.
Pair of NGC 6939 and 6946 in Cepheus with 135mm lens and Canon 20Da for 5 minutes at f/2.8 and ISO 400 - simulates 7° binocular field.
NGC 6946 galaxy (below and NGC 6939 open cluster (top) on Cygnus-Cepheus boreder. Taken Nov 6, 2010 with 105mm A&M apo refractor at f/5 with Borg .85x flattener/reducer and Canon 5DMkII at ISO 800 for stack of 5 x 12 minute exposures, Mean combined. Used Celestron CGEM mount and Sky-Watcher SynGuider on William Optics 66mm guidescope. All seemed to work well.
