M27, taken Oct 8, 2007 with 5-inch Astro-Physics apo refractor at f/6 with Canon 20Da camera at ISO 400 for stack of 3 x 15 minute exposures. With 6x7 field flattener. Guided with Meade DSI/66mm guidescope and PHDGuide sofware. Some minor dec trailing.
Stack of two 12-minute exposures at f/6 with 5-inch apo refractor. Canon 20Da camera at ISO800. LENR employed in camera. Noise Ninja applied to both images. B&C and Levels adjusted to increase contrast, and Black level increased in Selective Color to darken sky. No other color shift employed.
M27 the Dumbbell Nebula in Vulpecula, taken in brightening morning twilight, June 16, 2012, from home with the Astro-Physics 130mm apo refractor at f/6 with the 6x7 field flattener, for a stack of 3 x 6 minute exposures at ISO 800 with the Canon 60Da.
