Hemisphere:  Northern  ·  Constellation: Camelopardalis (Cam)  ·  Contains:  NGC 2403
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Spiral Galaxy in M81 Group (NGC 2403), 



    
        

            Scott Denning
Spiral Galaxy in M81 Group (NGC 2403)
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Spiral Galaxy in M81 Group (NGC 2403)

Getting plate-solving status, please wait...
Spiral Galaxy in M81 Group (NGC 2403), 



    
        

            Scott Denning
Spiral Galaxy in M81 Group (NGC 2403)
Powered byPixInsight

Spiral Galaxy in M81 Group (NGC 2403)

Technical card

Dates:Feb. 6, 2021

Frames: 335x120" (11h 10')

Integration: 11h 10'

Avg. Moon age: 24.03 days

Avg. Moon phase: 30.55%


Basic astrometry details

Astrometry.net job: 4221985

RA center: 7h 36' 52"

DEC center: +65° 36' 3"

Pixel scale: 0.543 arcsec/pixel

Orientation: 178.499 degrees

Field radius: 0.418 degrees


Resolution: 4424x3325

Locations: Home, Fort Collins, CO, United States

Data source: Backyard

Description

NGC 2403 in Camelopardalis (The Celestial Giraffe) Jan-Feb 2021

279 x 120s RGB & 56 x 600s Ha (total 18.6 hours exposure over many nights
Ha during full moon, RGB during waning moon
C8 Edge HD (1494 mm, f/7) with ASI1600 monochrome camera & ZWO filters
Guided with ASI 174mini & OAG on 10Micron GM1000 mount

This galaxy is part of a group of neighboring galaxies but not gravitationally bound in our Local Group. It’s part of the M81 group of galaxies and floats in intergalactic space near the celestial pole. It’s about 50,000 light years across and is located about 8 million light years distant, so we look back in time to see it before the dawn of humanity.

The galaxy is forming a lot of stars which show up in it’s bright blue spiral arms and cause ionize huge clouds of hydrogen gas that glows bright red. The enhanced star formation may be due to copious amounts of infalling gas. The core of the galaxy is golden yellow because the stars there are old. Big bright blue stars are young and burn out very quickly, leaving the core with that characteristic buttery glow.

The M81 group floats near the galactic pole, well above the plane of our Milky Way galaxy. Though NGC2403 is technically within the bounds of Camelopardalis, it lies about midway between the nose of the Great Bear of Ursa Major and the celestial Giraffe. It crosses high above the northern sky these late winter nights.

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Spiral Galaxy in M81 Group (NGC 2403), 



    
        

            Scott Denning