Comet ISON - C/2012 S1

C/2012 S1, also known as Comet ISON or Comet Nevski–Novichonok, is a sungrazing comet discovered on 21 September 2012 by Vitali Nevski (Виталий Невский, Vitebsk, Belarus) and Artyom Novichonok (Артём Новичонок, Kondopoga, Russia).^[5] The discovery was made using the 0.4-meter (16 in) reflector of the International Scientific Optical Network near Kislovodsk, Russia and the automated asteroid-discovery program CoLiTec.

The image above was taken at the Eldorado Star Party the morning of November 2, 2013. The image is a combination of 15 two minute images taken with an Orion StarShoot DSII through a Celestron 6" f5 Newtonian scope.  Autoguiding was accomplished with a Meade DSI Pro camera through a 80mm f7 Refractor.  The mount used was a Celestron CI-700.  Capture, Preprocessing and calibration of the sub-frames was done using Nebulosity 3.  Final Processing was done using Photoshop CS5.  The star trails in the final image represent 44 minutes of elapsed time.  Seven sub-frames were thrown out of the 22 total images taken due to defects.