Ring Nebula, M 57, NGC 6720
Object: Planetary Nebula
Constellation: Lyra
Apparent Magnitude: 9
Est. Distance: 2300 ly
Wikipedia link


Telescope: Celestron CPC 800 EQ Mount (with Wedge) @ f/10
Camera: QHY-8
Exposure: 27x900 sec (6 h 45 mins)
Guider: DMK 21AU04 running PHD Guiding on Orion Off-Axis Guider
Date: 29th August - 17th September 2011


Telescope: Celestron CPC 800 EQ Mount (with Wedge) with f/6.3 Focal Reducer
Camera: QHY-8
Exposure: 9x120 sec (18 mins)
Guidescope: Orion EON 80mm ED
Guider: DMK 21AU04 with PHD Guiding
Date: 10nd July 2009


Telescope: Celestron CPC 800 (8")
Camera: Nikon D70 unmodified
Exposure: 96x30 sec (48 mins)
ISO: 1600
Date: 4th May 2008

Annotated Version