Contains:IC 444, IC 443, The star μGem, The star Propus (ηGem), Part of the constellation Gemini (Gem)
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IC 443 & IC 444 Jellyfish Nebula in HST, 




    

        Douglas J Struble
IC 443 & IC 444 Jellyfish Nebula in HST

IC 443 & IC 444 Jellyfish Nebula in HST

Technical card

Resolution: 3144x3932

Dates: March 7, 2018March 11, 2018March 17, 2018

Frames:
Astrodon Ha 5nm: 83x240" (gain: 139.00) -20C bin 1x1
Astrodon OIII 3nm: 125x240" (gain: 139.00) -20C bin 1x1
Astrodon SII 3nm: 84x240" (gain: 139.00) -20C

Integration: 19.5 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 24.58 days

Avg. Moon phase: 33.43%

Bortle Dark-Sky Scale: 6.00

Astrometry.net job: 1971978

RA center: 94.914 degrees

DEC center: 22.749 degrees

Pixel scale: 2.317 arcsec/pixel

Orientation: 315.884 degrees

Field radius: 1.620 degrees

Locations: Backyard Red Zone Observatory, Taylor, MI, Michigan, United States

Data source: Unknown

Description

I had a problem with my AP Mach1 mount and it went in for warranty repair, so had to shelve two current projects with my 152mm triplet. I broke out my portable mount and started working on this. I captured way more OIII data and was still hard to pull out. I am pretty satisfied with the results, though.

The astonishing shape of the Jellyfish Nebula (IC 443) is a supernova remnant in Gemini. It's due to the resulting shock waves colliding with a molecular front, creating the 'blowback' of billowing strands seen in this image. IC 444 is the nebulous area seen at the top of the image. The two bright golden stars are Mu Geminorum and Eta Geminorum (Propus). This region is estimated to be some 5000 light years from earth.

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Author

dugstruble
Douglas J Struble
License: None (All rights reserved)
1820
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  • IC 443 & IC 444 Jellyfish Nebula in HST, 




    

        Douglas J Struble
    Original
  • Final
    IC 443 & IC 444 Jellyfish Nebula in HST, 




    

        Douglas J Struble
    B

B

Colors and contrast looked muted after uploading to Astrobin, so I tried to compensate.

Sky plot

Sky plot

Histogram

IC 443 & IC 444 Jellyfish Nebula in HST, 




    

        Douglas J Struble