by Dave Mitsky
This image of M13 was captured on 2009/4/2 using the Bradford Robotic Telescope at Tenerife in the Canary Islands. The telescope employed was a 14" f/11 Celestron C14 SCT fitted with a Celestron focal reducer, yielding an effective focal length of 1877mm at f/5.3, and the camera a FLI MicroLine fitted with a E2V CCD47-10 (1k x 1k pixels, each 13um square). I limited the exposure time to only 25 seconds due to problems with blooming, burnout, and mistracking. The dark lanes of the so-called Propeller (or Mercedes Benz Symbol) can be seen to the lower right of center.