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