Comet 21P / Giacobini-Zinner on 16.09.2018 between IC 443 (Jellyfish Nebula) and open clusters M 35 and NGC 2158

  Size: 2000 px      
© Velimir Popov & Emil Ivanov 2018

21P/Giacobini–Zinner is a periodic comet, which was discovered by Michel Giacobini on December 20, 1900. It was recovered two passages later by Ernst Zinner on October 23, 1913. During its apparitions, Giacobini–Zinner reaches about the 8th magnitude, but in 1946 it underwent a series of outbursts that made it as bright as 5th magnitude. It is the parent body of the Draconids meteor shower (also known as Giacobinids).The comet nucleus is estimated to be 2.0 kilometers in diameter. This images shows the comet on September 16th 2018 at 01:40 UT, between IC 443 (Jellyfish Nebula) and the open clusters Messier 35 and NGC 2158 (smaller, at the right).

Image details:


Center of field RA 06:12:37 (h:m:s)
Center of field DE +23:20:43 (deg:m:s)
Size 3.21 x 1.87 (deg)
Pixel scale: 2.99 (arcsec/pixel)
Orientation: Up is 337 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: 16. Sep. 2018 01:40 UT
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: L:3x3min., R:3x3 min, G:3x3 min, B:3x3 min, Bin 2, Total Exposure Time - 36 min., three panel mosaic
More details: Dark and flat frames reduction
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2013 - 2018. All Rights Reserved
click tracking