NGC 2403

  
 
 
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  • RA: 7:36.9
  • Dec:  +65:36
  • Magnitude: 8.4
  • Size: 17.8 x 11.0 arc min
  • Distance: 12,000,000 ly
  • Constellation:  Camelopardalis
  • Scope: 8" SCT at f/10
  • Autoguider: ST-4 faint mode
  • Sky conditions: good seeing and transparency.
  • Film: Kodak Supra 400
  • Exposure: 70 and 60 minutes
  • Date:  August 15, 2004 and August 22, 2004
Comments:   The first night was quite cold (low in the mid to low 40s) but luckily with very calm winds.  The second night was not quite as cold (only mid 40's) but rather outstanding.  NGC2403 is an outlying member of the M81 group and galaxies.  The arrow is pointing to an unusually bright supernova discovered by Japanese amateur astronomer Koichi Itagaki on July 31, 2004.  The supernova is currently at magnitude 11.2 and is located at RA 7h 37m 17s, Dec +65° 35' 58".  Another supernova was recorded in this galaxy, discovered by Zwicky on October 24, 1954.  This supernova reached a magnitude of 16.0 at its maximum.