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Contains:  NGC 6207, M 13, Great Cluster in Hercules, NGC 6205

Image of the day 05/26/2017

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    M13 - Great Globular Cluster in Hercules, 





    
        

            Thomas Richter
    M13 - Great Globular Cluster in Hercules

    M13 - Great Globular Cluster in Hercules

    Technical card

    Resolution: 3302x2532

    Dates:April 28, 2016May 16, 2017

    Frames:
    Baader B 1.25'' CCD Filter: 10x120" -20C bin 1x1
    Baader G 1.25'' CCD Filter: 10x120" -20C bin 1x1
    Baader L 1.25'' Filter: 29x300" -20C bin 1x1
    Baader R 1.25'' CCD Filter: 10x120" -20C bin 1x1

    Integration: 3.4 hours

    Darks: ~15

    Flats: ~30

    Bias: ~100

    Avg. Moon age: 20.16 days

    Avg. Moon phase: 70.49%

    Astrometry.net job: 1582485

    RA center: 250.407 degrees

    DEC center: 36.466 degrees

    Pixel scale: 1.222 arcsec/pixel

    Orientation: 88.817 degrees

    Field radius: 0.706 degrees

    Locations: Nürnberg, Nürnberg, Bayern, Germany

    Description

    Object description (wikipedia.org):

    Messier 13 (M13), also designated NGC 6205 and sometimes called the Great Globular Cluster in Hercules or the Hercules Globular Cluster, is a globular cluster of about 300,000 stars in the constellation of Hercules.
    M13 was discovered by Edmond Halley in 1714, and catalogued by Charles Messier on June 1, 1764.

    It is located at right ascension 16h 41.7m and declination +36° 28'. With an apparent magnitude of 5.8, it is barely visible with the naked eye on a very clear night. Its diameter is about 23 arc minutes and it is readily viewable in small telescopes. Nearby is NGC 6207, a 12th magnitude edge-on galaxy that lies 28 arc minutes directly north east. A small galaxy, IC 4617, lies halfway between NGC 6207 and M13, north-northeast of the large globular cluster's center.

    Comments

    Author

    superelch
    Thomas Richter
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    Revisions

      M13 - Great Globular Cluster in Hercules, 





    
        

            Thomas Richter
      Original
    • Final
      M13 - Great Globular Cluster in Hercules, 





    
        

            Thomas Richter
      B

    B

    reduced noise

    Sky plot

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    M13 - Great Globular Cluster in Hercules, 





    
        

            Thomas Richter