Messier 52 open cluster, at left, and the Bubble Nebula, NGC 7635 below and to the right of it, at centre, plus the small red nebula NGC 7538 at right. The open cluster at lower right is NGC 7510. All in Cassiopeia. This is a stack of 8 x 6-minute exposures at ISO 1600 with the Canon EOS Ra camera and Astro-Physics Traveler apo refractor at f/6 with the Hotech field flattener. No LENR employed as the temperature was -15° C.
Region of nebulosity around the open cluster M52, at top left, including the Bubble Nebula, NGC 7635. Bright nebula ar right is NGC 7538. Small star cluster at lower right is NGC 7510. Region of nebulositry at top is Sharpless 2-161 and twin forked nebulosity at bottom is Sharpless 2-157. Stack of 5 x 15 minute exposures (last taken at moonrise) with the Canon 5DMkII and A&M/Officina Stellare 105mm apo refractor with Borg .85x reducer/flattener for f/5.2. Autoguided with NextGuide and 66mm Willliam Optics apo for a guidescope. All on Astro-Physics Mach 1 mount. A windy night but clear.
M52 open cluster in Cassiopeia and NGC 7635, Bubble Nebula. Taken Nov 2, 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 13 minute exposures, Mean combined. Used Celestron CGEM mount and Celestron NexGuide on William Optics 66mm guidescope. Some trailing around the guidestar at bottom, with guidestar at top of frame.
