M81, Bode’s “Nebula” in Ursa Major


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Exposure Data: 3/8/2005.  LRGB:24 x 5m, 10x5m, 10x5m, 10x7m. RGB binned 2x2.
-20°C, 0.56 arc-sec./pixel.
Processing: Automatic acquisition, dithering, focusing via CCDAutoPilot2 and CCDSoft, reduced and aligned, in Mira, LRGB combine in Maxim, LLRGB combine, curves, levels and other processing in Photoshop.
Optical System: 14.5” Ritchey-Chretien @ F/9 w/FFC, IMG6303E/CFW-7 CCD camera, AstroDon filters, Paramount ME, dithered 4 pixels, unguided.
Comments: Unattended imaging through the meridian.