Celestial hemisphere:  Northern  ·  Constellation: Camelopardalis (Cam)  ·  Contains:  NGC 2403
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NGC 2403 HaLRGB Image, 


            Eric Coles (coles44)
NGC 2403 HaLRGB Image
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NGC 2403 HaLRGB Image

Acquisition details

Feb. 5, 2016 ·  Feb. 6, 2016 ·  Feb. 7, 2016 ·  Feb. 8, 2016 ·  Feb. 9, 2016 ·  Feb. 10, 2016 ·  Feb. 11, 2016
Astrodon Blue Tru-Balance E-Series Gen 2: 10×1800(5h) bin 1×1
Astrodon Green Tru-Balance E-Series Gen 2: 10×1800(5h) bin 1×1
Astrodon H-alpha 3 nm: 12×1800(6h) bin 1×1
Astrodon Luminance Tru-Balance E-Series Gen 2: 42×1800(21h) bin 1×1
Astrodon Red Tru-Balance E-Series Gen 2: 15×1800(7h 30′) bin 1×1
44h 30′
Avg. Moon age:
16.78 days
Avg. Moon phase:

RA center: 07h36m57s.8

DEC center: +65°3509

Pixel scale: 0.507 arcsec/pixel

Orientation: -0.089 degrees

Field radius: 0.319 degrees

Resolution: 620x415

File size: 185.9 KB

Locations: Sierra Remote Observatories, Shaver Lake, California, United States


Astronomy Image Of the Day (APOD), February 19, 2016


Magnificent island universe NGC 2403 stands within the boundaries of the long-necked constellation Camelopardalis. Some 10 million light-years distant and about 50,000 light-years across, the spiral galaxy also seems to have more than its fair share of giant star forming HII regions, marked by the telltale reddish glow of atomic hydrogen gas. The giant HII regions are energized by clusters of hot, massive stars that explode as bright supernovae at the end of their short and furious lives. A member of the M81 group of galaxies, NGC 2403 closely resembles another galaxy with an abundance of star forming regions that lies within our own local galaxy group, M33 the Triangulum Galaxy. Spiky in appearance, bright stars in this colorful galaxy portrait of NGC 2403 are in the foreground, within our own Milky Way.



  • Final
    NGC 2403 HaLRGB Image, 


            Eric Coles (coles44)
  • NGC 2403 HaLRGB Image, 


            Eric Coles (coles44)

Sky plot

Sky plot


NGC 2403 HaLRGB Image, 


            Eric Coles (coles44)