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M39 cluster (Telescope view).jpg
M39 open cluster in Cygnus. Taken Oct 30, 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 10 minute exposures, Median combined. Used Celestron CGEM mount and NexGuider on William Optics 66mm guidescope. All seemed to work well.
- © Alan Dyer 2010
- Image Size
- 5500x3600 / 6.4MB
- Contained in galleries
- Simulated Naked-Eye and Eyepiece Views