Hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  IC 4592  ·  IC 4601  ·  IC 4603  ·  IC 4604  ·  IC 4605  ·  M 4  ·  NGC 6121  ·  Part of the constellation Scorpius (Sco)  ·  The star Al Niyat (σSco)  ·  The star Antares (αSco)  ·  The star Dschubba (δSco)  ·  The star Graffias (β1Sco)  ·  The star νSco  ·  The star πSco  ·  The star χOph  ·  The star ω1Sco  ·  The star ω2Sco  ·  The star ωOph  ·  rho Oph nebula

Image of the day 04/01/2017

Getting plate-solving status, please wait...
    The head of Scorpion, 



    
        

            Yuichi Kawamoto
    The head of Scorpion
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    The head of Scorpion

    Technical card

    Imaging telescopes or lenses: William Optics Star 71  ·  BORG 67FL

    Imaging cameras: Canon EOS 6D  ·  QHYCCD QHY16200A Mono

    Mounts: CEM60

    Guiding telescopes or lenses: Takahashi GT-40

    Guiding cameras: QHYCCD QHY 5L-II mono

    Focal reducers: Borg 7108

    Software: Astroplace.net APT  ·  PixInsight 1.8

    Filters: IDAS HEUIBII


    Dates:March 4, 2017

    Frames:
    45x140" ISO1600
    IDAS HEUIBII: 45x140" -20C bin 1x1

    Integration: 3.5 hours

    Darks: ~10

    Flats: ~25

    Bias: ~50

    Avg. Moon age: 6.32 days

    Avg. Moon phase: 38.82%


    Basic astrometry details

    Astrometry.net job: 1508137

    RA center: 16h 13' 18"

    DEC center: -23° 4' 12"

    Pixel scale: 3.632 arcsec/pixel

    Orientation: -179.836 degrees

    Field radius: 8.006 degrees


    Resolution: 560x443

    Locations: Asagiri Plateau, Fujinomiya City, Shizuoka-City, Japan

    Data source: Traveller

    Description

    Just a quick, 9 sub-frame mosaic shot before dawn, actually I got blue sky with the last few shots;) so colors are less vivid than intended. Only 11 minutes of exposure for L and RGB channels respectively for each sub frame. Expecting next opportunity.

    20200229 recovery from data loss: the original full size image not available. To be updated after reproduction.

    Comments

    Revisions

      The head of Scorpion, 



    
        

            Yuichi Kawamoto
      Original
      The head of Scorpion, 



    
        

            Yuichi Kawamoto
      B
      The head of Scorpion, 



    
        

            Yuichi Kawamoto
      C
      The head of Scorpion, 



    
        

            Yuichi Kawamoto
      D
      The head of Scorpion, 



    
        

            Yuichi Kawamoto
      E
    • Final
      The head of Scorpion, 



    
        

            Yuichi Kawamoto
      F

    B

    Description: Image trimmed and flattened

    Uploaded: ...

    C

    Description: RGB initial merge

    Uploaded: ...

    F

    Description: 20200229 recovery from data loss: the original full size image not available. To be updated after reproduction.

    Uploaded: ...

    Sky plot

    Sky plot

    Histogram

    The head of Scorpion, 



    
        

            Yuichi Kawamoto