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Messier 81, M81, NGC 3031
(click for full-size image)

Optics: Stellarvue 115 f/7, Astro-Tech AT2FF Field Flattener
Camera: QSI 683wsg @ -25C
Filters: Astrodon Tru-Balance Gen 2 E Series LRGB, Astrodon H-alpha 5nm
Mount: Losmandy G11-G2
Guiding: OAG with Starlight Xpress Lodestar Auto Guider / PHD Guiding
Location: North Attleboro, Massachusetts
15 hours exposure over 10 nights, 3/13/2013 - 4/4/2013
Ha:L:R:G:B 5h:4h45m:2h:1h45m:1h30m (10m and 15m subs) binned 1:1:2:2:2
Captured with Sequence Generator Pro
Processed with PixInsight and Photoshop CS6