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.
