NGC 281 emission nebula in Cassiopeia, with 130mm AP apo refractor at f/4.5 with AP reducer/flattener, and Canon 5D MkII at ISO 800 for stack of 6 x 10 minute exposures.
NGC 281 in Cassiopeia, with stack of 4 x 12 minute exposures at ISO 400, with Hutech-modified Canon 5D camera. Astro-Physics 5-inch apo refractor at f/6.
