Astral Imaging at Dogwood Ridge Observatory

Latitude: 37°48'51.0" N"
Longitude:78°23'41.0"W
Scottsville, Virginia 24590

(click on thumbnails to go to that image's page)

Discovered by William Herschel in 1788.

This beautiful spiral galaxy is an outlying member of the M81 group of galaxies, and thus about 12 million light years distant.

NGC 2403 is among the more conspicuous Northern objects which Charles Messier missed when compiling his catalog. Thus its discovery was left to William Herschel.

• One supernova has been recorded in this galaxy so far: Supernova 1954J, which was discovered by Zwicky (PASP 84, 844) on October 24, 1954. This supernova was situated 36E, 100N of the galaxy's nucleus and reached mag 16.0 in its maximum.

  In the SAC 110 best NGC object list. Caldwell 7 in Patrick Moore's list. In the RASC's Finest N.G.C. Objects Objects list.

• NED data of NGC 2403
• SIMBAD Data of NGC 2403
• Publications on NGC 2403 (NASA ADS)
• Observing Reports for NGC 2403 (IAAC Netastrocatalog)
• NGC Online data for NGC 2403

This image consists of 19 luminance, 17 red, 16 green, and 17 blue 15 minute exposures for a total of 17-1/4 hours. The rgb images are binned 2x2 while the luminance images are binned 1x1. All taken at -30°C. All data was acquired using MaxImDl/CCD version 5.24 using ACP7.1.  Pix Insight version 1.8.02.1098 was used for processing. Dithered guiding was on.