M76, Little Dumbbell Nebula, 11 Dec 2012 (David Dearden)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: Barbell Nebula · Cork Nebula · Little Dumbbell Nebula · M 76 · NGC 650

M76, Little Dumbbell Nebula, 11 Dec 2012, David Dearden

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M76, Little Dumbbell Nebula, 11 Dec 2012

M76 is easy to find by virtue of bright nearby stars with which the Telrad can be aligned, plus it is bright enough to see with 1 s exposures in both the imaging and guiding cameras. Clouds are coming in, so I hope I get something useful before they end the session. Not using the chiller tonight; CCD is at 6 °C. At 300 s, I can see the side lobes of the nebula in my subs. Session ended way too early due to clouds.

Date: 11 Dec 2012

Subject: M76, Little Dumbbell Nebula

Scope: AT8IN+High Point Scientific coma corrector spaced properly

Filter: None

Mount: CG-5 (Synta motors)

Guiding: Orion ST80 + DSI Ic + PHD 1.14.0

Camera: DSI IIc (no chiller, T = -6 °C)

Acquisition: Nebulosity 3.1.2, no dither

Exposure: 3 x 300 s

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

Processing: Neb 3 crop and auto color balance. StarTools 1.3 Wipe, Develop, Deconvolute, Track, Magic:Shrink , Life:Moderate. CS6 layer mask, star color enhance.

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Status	Basic success
Started	...
Astrometry.net job	6479788
PixInsight job	n/a
PixInsight queue size	n/a
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