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M57 Ring Nebula (Telescope view).jpg
M57 with 130mm Astro-Physics apo at f/6 with no field flattener (slight camera tilt results in more coma at left of frame), for stack of 6 x 8 minute exposures at ISO 800 with Canon 7D (stock camera, not modified). Auto-guided with SG4. Worked perfectly.
- © Alan Dyer 2010
- Image Size
- 5189x3461 / 2.8MB
- Contained in galleries
- Simulated Naked-Eye and Eyepiece Views