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Image of the day 11/05/2018

Getting plate-solving status, please wait...
    The Popped Balloon (Abell 85 - CTB1 - LBN 576), 


            Kevin Morefield

    The Popped Balloon (Abell 85 - CTB1 - LBN 576)

    Technical card

    Resolution: 3811x3909

    Dates:Oct. 26, 2018

    Astrodon Ha 5 nm: 34x1200" -20C bin 1x1
    Astrodon OIII 3 nm: 39x1200" -20C bin 1x1
    Astrodon SII 3 nm: 37x1200" -20C bin 1x1

    Integration: 36.7 hours

    Darks: ~20

    Flats: ~20

    Bias: ~20

    Avg. Moon age: 16.60 days

    Avg. Moon phase: 96.23%

    Bortle Dark-Sky Scale: 3.00 job: 2340068

    Locations: Sierra Remote Observatory, Auberry, California, United States

    Data source: Own remote observatory

    Remote source: Sierra Remote Observatories


    This goes by many names - I even saw someone call it the Garlic Nebula. I see a balloon that someone just poked with a needle. Since this is a supernova remnant it is more likely that the balloon finally reached its breaking point and we are lucky to see the initial breakthrough of the gasses.

    This is an interesting processing challenge in that it is very faint and the structure of the bubble is very similar in brightness the background (or foreground?) nebulosity. I found that the SII was relatively stronger in the shell than the background, while the Ha showed less contrast. So I tried to use the SII to help separate in both color and structure.

    This is 110 twenty minute subs of SHO. Total time almost 37 hours.



    Kevin Morefield
    License: None (All rights reserved)


      The Popped Balloon (Abell 85 - CTB1 - LBN 576), 


            Kevin Morefield
    • Final
      The Popped Balloon (Abell 85 - CTB1 - LBN 576), 


            Kevin Morefield


    Color balance change


    The Popped Balloon (Abell 85 - CTB1 - LBN 576), 


            Kevin Morefield

    In these public groups

    Narrowband imaging