M82 and M81, Galaxies in Ursa Major)

    Messier 82 and 81, Galaxies in Ursa Major

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    Technical Details:

    Object: M82 and M81 Galaxies in Ursa Major
    Observing Site: Azor Observatory, Las Rozas, Madrid, Spain. 18.84 mag arcsec-2
    Date: 2008 December 21 and 22
    Camera: SBIG STL-11000M @ -20ºC
    Telescope: ASA N10 Astrograph @ f/6.7, Astrophysics AP1200 mount
    Filters: Astrodon Luminance NIR Blocked
    Exposure: 565 minutes (M81 L 23x15 min subs, M82 L 22x10 min subs)
    Processing Software: Maxim DL, Photoshop
    Comments: two frame mosaic, CCD Commander used for unattended data acquisition. Shown at 25% size


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