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IC 443, Jellyfish Nebula, 7 Feb 2013, David Dearden

IC 443, Jellyfish Nebula, 7 Feb 2013

Equipment

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Acquisition details

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Description

The Jellyfish Nebula, a supernova remnant, is an easy find from the visible star Propus. Conditions tonight leave a lot to be desired, principally because a storm is on its way in and it is therefore breezy. We also have high clouds and it does not look good. I'll have to come back to this object if tonight does not work out. CCD at 6.5 °C.

Date: 7 Feb 2013

Subject: IC 443, Jellyfish Nebula

Scope: AT8IN+Antares 0.5x telereducer

Filter: None

Mount: CG-5 (Synta motors)

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

Camera: DSI IIc (no chiller, T = 0 °C)

Acquisition: Nebulosity 3.1.2, no dither

Exposure: 29x300 s

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

Processing: StarTools 1.3 Develop, Contrast, HDRptimize, Sharp, Deconvolute, Wipe:Color only, Track, Magic:Shrink, Life:Moderate, Life:Isolate. CS6 Astronomy Tools increase star color, make stars smaller, levels, AstroFrame.

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Histogram

IC 443, Jellyfish Nebula, 7 Feb 2013, David Dearden