Deepsky - Pieter Vandevelde

M101: The Pinwheel galaxy in Ursa Major

Scope: 10" f/3.8 Newtonian
Mount: Mesu 200 Sitech
Guiding: Off axis with Lodestar
Camera: sbig st8300 @ -20°C
Filters: Baader LRGB & 7nm H-alpha
Exposure: 23 hours (1370 min) total, all unbinned
L: 35 x 15 min (525 min)
RGB: 3 x 28 x 5 min (410 min)
H-alpha: 29 x 15 min (435 min)

Resolution: 1.17 arcsec/pixel

Dates: April 7th 2013, February 23rd 2014, March 25, 27 & 28th 2014.
Lum and colour captured under the immaculate dark skies from Provence S-France.