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Messier 71 is a globular cluster in the constellation Sagitta. The cluster is at a distance of around 12,000 light years away from Earth and is approximately 27 light years across. This is my first image using an Celestron Off-Axis Guider and it seems to have made a big difference to the overall result. Previously I could not have done 10 minute sub-frames without noticeable distortion of stars. If you want more detail the astrobin link is: http://www.astrobin.com/266668/B