Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
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

Getting plate-solving status, please wait...
    Jellyfish Nebula IC443 mosaic, 


            Barry Wilson
    Jellyfish Nebula IC443 mosaic

    Jellyfish Nebula IC443 mosaic

    Technical card

    Resolution: 3220x4411

    Dates:March 2, 2019

    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% 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


    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



    Barry Wilson
    License: None (All rights reserved)

    Sky plot

    Sky plot


    Jellyfish Nebula IC443 mosaic, 


            Barry Wilson