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M76, Little Dumbbell Nebula, 3 Jan 2013, 


            David Dearden

M76, Little Dumbbell Nebula, 3 Jan 2013

Acquisition details

Jan. 3, 2013
Avg. Moon age:
20.46 days
Avg. Moon phase:

Resolution: 620x526

File size: 155.5 KB

Locations: Mapleton Lateral Observatory, Mapleton, Utah, United States


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.



M76, Little Dumbbell Nebula, 3 Jan 2013, 


            David Dearden