Comet C/2012 S1 (ISON)

C/2012 S1, also known as Comet ISON or Comet Nevski–Novichonok, is a sungrazing comet discovered on 21 September 2012 by Vitali Nevski (Vitebsk, Belarus) and Artyom Novichonok (Kondopoga, Russia) 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 discovery was announced by the Minor Planet Center on 24 September. Observations by SWIFT suggest that C/2012 S1's nucleus is around 5 kilometers (3.1 mi) in diameter.

ISON comes to perihelion (closest approach to the Sun) on 28 November 2013 and will pass approximately 1,100,000 km (680,000 mi) above the Sun's surface. If it survives perihelion it should become a splendid naked eye object perhaps rivalling C/2011 W3 Lovejoy in appearance. We simply don't know. All we can do is watch and wait!

 

Comet ISON - Sep 24th to Nov 15th.


November 15th, 2013     0.11m F5.6. STL-11k camera. LRGB: L: 5x2mins. RGB: 1x2mins.


November 10th, 2013     0.11m F5.6. STL-11k camera. LRGB: L: 7x2mins. RGB: 1x2mins.


November 7th, 2013     17"CDK with FLI-PL6303E camera. LRGB: L: 7x2mins. RGB: 1x2mins.


November 6th, 2013     17"CDK with FLI-PL6303E camera. LRGB: L: 7x2mins. RGB: 1x2mins.


October 27th, 2013     17"CDK with FLI-PL6303E camera. LRGB: L: 7x2mins. RGB: 1x2mins.


October 24th, 2013     0.11m F5.6. STL-11k camera. LRGB: L: 6x3mins. RGB: 1x2mins. With Messier 95.


October 11th, 2013     17"CDK@F4.5. FLI-PL6303E camera. LRGB: L: 5x3mins. RGB: 1x2mins.


September 24th, 2013     17"CDK@F4.5. FLI-PL6303E camera. LRGB: L: 5x3mins. RGB: 1x2mins.


September 4th, 2013     10" Newtonian@F3.6. SBIG-ST10XME camera. 4x3mins unfiltered. My first image following solar conjunction.


March 2nd, 2013     17"CDK@F4.5. FLI-PL6303E camera. 4x3mins unfiltered.

 


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