NGC 2403 Galaxy Click on photo to return to 'Galaxies' Home
Dreyer description: Very remarkable! Considerably bright, extremely large, very moderately extended, very gradually much brighter middle nucleus.
RA: 07h 36m 54.5s Dec: +65°35'58" (Epoch 2000)
Azm: 328°45'48" Alt: +50°24'18"
Always above horizon. Transit: 21:32
Spiral Galaxy NGC 2403 (= H V.44), type Sc, in Camelopardalis
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.
TELESCOPE: 8" Newtonian F/5 (stopped down to 5.2 inches)
CAMERA: 'SBIG' ST-8XE & CFW8 color filter wheel
CAMERA TEMP: Temp. = -22 C
Processing: MaxIm; align, color combine, DDP