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Contains:  NGC 6946, NGC 6939, The star Alderamin (αCep), The star ηCep, The star θCep, The star 71Dra

Image of the day 06/04/2018

Getting plate-solving status, please wait...
    Celestial Variety: NGC6946, NGC6939, Barnard 150, SH2-129 and OU4 (HAOIIIRGB), 





    
        

            Fritz
    Celestial Variety: NGC6946, NGC6939, Barnard 150, SH2-129 and OU4 (HAOIIIRGB)

    Celestial Variety: NGC6946, NGC6939, Barnard 150, SH2-129 and OU4 (HAOIIIRGB)

    Technical card

    Resolution: 2191x1416

    Dates:May 5, 2018May 9, 2018May 11, 2018May 12, 2018May 18, 2018May 20, 2018

    Frames:
    44x60" ISO400
    239x60" ISO800
    Astromomik Astronomik OIII 12nM: 28x1200" ISO1600
    Astromomik Astronomik OIII 12nM: 62x300" ISO1600
    Astromomik Astronomik OIII 12nM: 9x360" ISO1600
    Optolong H-Alpha 7nm: 63x300" ISO1600
    Optolong H-Alpha 7nm: 8x360" ISO1600
    Optolong H-Alpha 7nm: 24x900" ISO1600

    Integration: 32.2 hours

    Darks: ~10

    Flats: ~30

    Bias: ~77

    Avg. Moon age: 17.32 days

    Avg. Moon phase: 30.62%

    Astrometry.net job: 2077668

    RA center: 313.422 degrees

    DEC center: 60.471 degrees

    Pixel scale: 13.687 arcsec/pixel

    Orientation: 358.845 degrees

    Field radius: 4.959 degrees

    Locations: Mobile Setup, Wien, Austria; Mobile Setp, Emberger Alm, Carinthia, Austria

    Data source: Traveller

    Description

    When I started this project, I did not realize that I was about to bite off more than I might be able to chew: Boy, these are really faint objects!

    Soon after i started to collect data, I feared that I would never be able to finish this: There was not even a trace of OU4 visible after stacking. So I traveled some 400 km to a really dark spot (20 minute subs at f/2 possible there), this did the trick. Most of data collection was done with a dual setup, a second Samyang lens was provided by my friend Wolfgang.

    Data processing was challenging, to put it mildly. This is the result.

    Comments

    Author

    Magellen
    Fritz
    License: Attribution-NonCommercial-ShareAlike Creative Commons
    153265
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    Celestial Variety: NGC6946, NGC6939, Barnard 150, SH2-129 and OU4 (HAOIIIRGB), 





    
        

            Fritz