Celestial hemisphere:  Northern  ·  Constellation: Perseus (Per)  ·  Contains:  Barbell Nebula  ·  Cork Nebula  ·  Little Dumbbell Nebula  ·  M 76  ·  NGC 650
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M76, Little Dumbbell Nebula, 3 Jan 2013, David Dearden
M76, Little Dumbbell Nebula, 3 Jan 2013
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M76, Little Dumbbell Nebula, 3 Jan 2013

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Description

Had a lot more trouble finding M76 tonight up near the zenith; there's an inversion and the air was not as clear as it could have been. Found it in the finder/guider. CCD at -12.5 °C with no chiller. Guiding is working fairly well again with the finder/guider. Stuff keeps icing up.

Date: 3 Jan 2013

Subject: M76, Little Dumbbell Nebula

Scope: AT8IN+High Point Scientific coma corrector spaced properly

Filter: None

Mount: CG-5 (Synta motors)

Guiding: 9x50 Finder/Guider + DSI Ic + PHD 1.14.0

Camera: DSI IIc (no chiller, T = -12.5 °C)

Acquisition: Nebulosity 3.1.2, no dither

Exposure: 36 x 300 s

Stacking: Neb 3, bad pixel map, bias included, normalize first, trans+rot align, 1.5 SD stack.

Processing: Neb 3 crop and auto color. StarTools 1.3 Wipe, Develop, Deconvolute (2.9), Track, Magic:Shrink, Life:Isolate, Repair:Warp. CS6 Astronomy Tools Increase Star Color, Less Crunchy More Fuzzy, AstroFrame.

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M76, Little Dumbbell Nebula, 3 Jan 2013, David Dearden