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Image of the day 09/20/2017

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    Cave Nebula, 





    
        

            Marcel Drechsler
    Cave Nebula

    Technical card

    Resolution: 3500x2557

    Dates:Sept. 3, 2017Sept. 11, 2017Sept. 12, 2017Sept. 13, 2017

    Frames:
    Baader f/2 Highspeed 2" H-Alpha Filter: 678x100" (gain: 139.00) -28C bin 1x1
    Baader f/2 Highspeed 2" OIII Filter: 69x100" (gain: 139.00) -28C bin 1x1

    Integration: 20.8 hours

    Darks: ~100

    Flats: ~200

    Bias: ~200

    Avg. Moon age: 18.99 days

    Avg. Moon phase: 67.02%

    Bortle Dark-Sky Scale: 4.00

    Astrometry.net job: 1725882

    RA center: 344.284 degrees

    DEC center: 62.566 degrees

    Pixel scale: 1.637 arcsec/pixel

    Orientation: 88.727 degrees

    Field radius: 0.985 degrees

    Locations: Sternwarte am Bärenstein, Bärenstein, Sachsen, Germany

    Description

    HaOIII BiColor Image

    Comments

    Author

    Marcel_Drechsler
    Marcel Drechsler
    License: Attribution-NoDerivs Creative Commons
    8296
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    Cave Nebula, 





    
        

            Marcel Drechsler