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Contains:  IC 444, IC 443, The star μGem, The star Propus (ηGem), Part of the constellation Gemini (Gem)

Image of the day 03/12/2019

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    Jellyfish Nebula IC443 mosaic, 





    
        

            Barry Wilson
    Jellyfish Nebula IC443 mosaic

    Jellyfish Nebula IC443 mosaic

    Technical card

    Resolution: 3220x4411

    Dates:March 2, 2019

    Frames:
    Astrodon 5nm Ha: 43x1200" bin 1x1
    Astrodon 5nm Olll: 42x1200" bin 1x1
    Astrodon 5nm SII: 42x1200" bin 1x1

    Integration: 42.3 hours

    Avg. Moon age: 25.82 days

    Avg. Moon phase: 14.81%

    Astrometry.net job: 2559576

    RA center: 94.871 degrees

    DEC center: 22.778 degrees

    Pixel scale: 2.097 arcsec/pixel

    Orientation: 271.122 degrees

    Field radius: 1.591 degrees

    Locations: Entre Encinas y Estrellas E-EyE, Fregenal de la Sierra, Extremadura, Spain

    Data source: Own remote observatory

    Remote source: e-EyE Extremadura

    Description

    A two pane mosaic of this supernova remnant and it spectacular shells of expanding gases and its associated emission nebula Sharpless 249. This is the second process, however initially I chose a classic Hubble Pallete with its orange-yellow hues. It was a great image but I felt I wanted more of a contrast between all of the interacting gases across the frame.

    After some experimentation I modified the Blue channel mapping (Ha x OIII)xOIII and after some Colour Mask work I ended with the Jellyfish itself rendered with a redder hue that gave a marked contrast to Sh249 and also revealed the structure of the narrow neck of accelerating remnant gases. Of course processing Mu and Eta Geminorum was a challenge!

    Captured through January and into early Febraury. I have dated the image for today's reprocess.

    Data acquisition: Barry Wilson & Steve Milne
    Processing: Barry Wilson

    Comments

    Author

    Barry-Wilson
    Barry Wilson
    License: None (All rights reserved)
    103344
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    Jellyfish Nebula IC443 mosaic, 





    
        

            Barry Wilson