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Contains:  IC 443
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IC 443, 


            Gary Imm
IC 443

IC 443

Technical card

Resolution: 4556x3440

Dates:Nov. 17, 2018Dec. 10, 2018Dec. 11, 2018Dec. 12, 2018

Astrodon Blue 31mm Gen2 I-Series: 60x30" (gain: 139.00) -20C bin 1x1
Astrodon Green 31mm Gen2 I-Series: 60x30" (gain: 139.00) -20C bin 1x1
Astrodon Ha 31mm 5nm: 40x300" (gain: 300.00) -20C bin 1x1
Astrodon OIII 31mm 3nm: 40x300" (gain: 300.00) -20C bin 1x1
Astrodon Red 31mm Gen2 I-Series: 60x30" (gain: 139.00) -20C bin 1x1
Astrodon SII 31mm 5nm: 40x300" (gain: 300.00) -20C bin 1x1

Integration: 11.5 hours

Avg. Moon age: 5.15 days

Avg. Moon phase: 29.05% job: 2421807

RA center: 6h 16' 49"

DEC center: +22° 28' 58"

Pixel scale: 0.782 arcsec/pixel

Orientation: 268.090 degrees

Field radius: 0.620

Data source: Backyard


This beautiful object is a supernova remnant located 5000 light years away in the constellation of Gemini. The appropriately nicknamed Jellyfish Nebula spans about 70 light-years and its apparent size is twice that of our full moon. This image shows the hydrogen, oxygen, and sulfur gas fronts leftover from the violent explosion. The remnants of the now dense neutron star which originated the explosion are located in the center of the image.

Supernova remnants are one of my favorite deep sky objects. In this image, I really like the narrow dark lanes which wind through the relatively sparse central area of the nebula, as well as the red and cyan emission glows which are radiating out of the nebula to the upper right. Much of the central area is obscured by a large molecular cloud in the foreground which extends from upper left to lower right.



Gary Imm
License: None (All rights reserved)

Sky plot

Sky plot


IC 443, 


            Gary Imm