M27 Dumbell Nebula June-July 2011

4 hours: 1 each of Lum, R, G, B. RGB 2×2. QSI583WSG guided with a Lodestar, on an AT8RC, on a Losmandy G11.

Lum-Median-LRGB

Camera QSI583wsg 3348 x 2574 pixels of 5.4 µm
Temperature Did not record Did not record
Telescope AT8RC 1625mm f/l, f/8
Mount Losmandy G11
Guiding Lodestar
Luminance 1 hour, 12 x 5-min subs bin 1×1: 0.7 arc-sec per pixel
Red 1 hour, 12 x 5-min subs bin 2×2: 1.4 arc-sec per pixel
Green 1 hour, 12 x 5-min subs bin 2×2: 1.4 arc-sec per pixel
Blue 1 hour, 12 x 5-min subs bin 2×2: 1.4 arc-sec per pixel
Darks Did not record
Flats Did not record
Processing CCDStack (median), Photoshop

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