Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1590  ·  NGC 281  ·  Sh2-184
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NGC 281, Pacman Nebula, Hα, 10 Sep 2014, David Dearden
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NGC 281, Pacman Nebula, Hα, 10 Sep 2014

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Description

The air is mostly quite still. Interestingly, my RA guiding is great but the DEC is only so-so, the opposite of what I usually see. This is first light for my 2014 MacBook Pro. T = 9-15 °C with chiller at 2.50 A. By far my best Pacman to date. Hα helps a lot on this one.

Date: 10 Sep 2014

Subject: NGC 281, Pacman Nebula

Scope: AT8IN+0.5x Antares telereducer

Filter: Baader Planetarium 7 nm H-α

Mount: CG-5 (Synta motors, PicGoto Simplificado)

Guiding: 9x50 Finder/Guider + DSI Ic + PHD 2.3.0 (Win 7 ASCOM)

Camera: DSI IIc chiller at 2.50 A, 9-15 °C

Acquisition: Nebulosity 3.2.1, no dither

Exposure: 36x600 s

Stacking: Neb 3, bad pixel map, bias included, extract R, normalize, square, trans+rot align, 1.5 SD stack, resize 2x.

Processing: StarTools 1.3.5.279 Crop; Develop 74.99%; HDRptimize; Deconvolute 3.7 pix; Track; CC 2014 AstronomyTools B&W to Hα; Astro Frame.

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NGC 281, Pacman Nebula, Hα, 10 Sep 2014, David Dearden