Comet C2012S1 (ISON)


    12" ASA - LRGB      
    Size: 2000 px      
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© Velimir Popov & Emil Ivanov 2013
The comet ISON (also known as C/2012 S1, or Comet Nevski–Novichonok), was discovered on 21 September 2012 by Vitali Nevski and Artyom Novichono using the 0.4-meter (16 inch) reflector of the International Scientific Optical Network near Kislovodsk, Russia and the automated asteroid-discovery program CoLiTec. After this the comet was located on precovery images by the Mount Lemmon Survey from 28 December 2011 and by Pan-STARRS from 28 January 2012. 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. This image was taken on November 3rd 2013 between 3:50 and 5:20 LT (1:50 and 3:20 UT)


Object details:

Right Ascension 11:22:15 (h:m:s)
Declination +05:04:26 (deg:m:s)
Magnitude 7.2 m
Distance 1.29 (AU)
Apparent Dimension - (arc min)

Image details:


Center of field RA 11:22:15 (h:m:s)
Center of field DE +05:04:26 (deg:m:s)
Size 69.9 x 49.1 (arcmin)
Pixel scale: 1.6 (arcsec/pixel)
Orientation: Up is -176 degrees E of N
Charts and image details obtained from
Optic(s): ASA 12" Astrograph @ f/3.6 (Newton)
Mount: ASA DDM85 Standard
Camera: SBIG STL 11000 M
Filters: Luminance, Red, Green, Blue, Astronomik filters
Dates/Times: 3.11.2013
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: L:7x5 min; R:7x5 min, G:7x5 min, B:7x5 min Bin 1, Total Exposure Time - 140 min
More details: Dark frames reduction
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2013. All Rights Reserved
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