Comet C/2013 A1 (Siding Spring) near the globular cluster 47 Tuc

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© Velimir Popov & Emil Ivanov 2014
Size: 2000 px

C/2013 A1 (Siding Spring) is an Oort cloud comet discovered on 3 January 2013 by Robert H. McNaught at Siding Spring Observatory using the 0.5-meter (20") Uppsala Southern Schmidt Telescope. At the time of discovery it was 7.2 AU from the Sun and located in the constellation Lepus. Comet C/2013 A1 probably took millions of years to come from the Oort cloud. After leaving the planetary region of the Solar System, the post-perihelion orbital period (epoch 2050) is estimated to be roughly 1 million years. On this image taken on the morning of August 30th 2014 from 4:00 until 4:30 LT, the comet was near the globular cluster 47 Tucanae.

Image details


Center of field RA 00:26:50(h:m:s)
Center of field DE -72:19:05 (deg:m:s)
Size 1.4 x 1.4 (deg)
Pixel scale: 1.26 (arcsec/pixel)
Orientation: Up is 179 degrees E of N
Charts and image details obtained from
Optic(s): 16" f3,75 Dream Corrected Astrograph (DCA)
Mount: Astelco NTM-500 direct drive mount
Camera: Apogee Alta U-16M CCD camera
Filters: Lum, Red, Green, Blue Astrodon
Dates/Times: 29 Aug. 2014
Location: Namibia-TIVOLI ASTROFARM, S 23° 27' 40,9" / E 18° 01' 02,2"
Exp. Details:

R:3x2min, G3x2min, B:3x2min, Bin 1 Total Exposure Time 18 min.

More details: Dark and flat frames reduction
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2014. All Rights Reserved
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