I wanted to see what the Jellyfish looks like in Hα and was not disappointed. I had a hard time getting a plate solve through the main imager (I always seem to have a harder time with plate solves when using the Hα filter), but eventually I got it to work and got on target with the Astrotortilla/PicGoto combination. I didn't even look at the CCD temperature, but it was a warm night for December in Utah. The session started with clear skies, but the sky got progressively worse and by about 1 AM when I went out to check on doing a meridian flip there were high, thin clouds almost everywhere. I'll combine this with last year's RGB data shortly.
Date: 10 Dec 2014
Subject: IC 443, Jellyfish Nebula
Scope: Orion ST-80+Antares 0.5x focal reducer
Filter: Baader Planetarium Hα
Mount: CG-5 (Synta motors, PicGoto Simplificado)
Guiding: 9x50 Finder/Guider + DSI Ic + PHD 2.4.1 (Win 7 ASCOM)
Camera: DSI IIc no chiller ~8 °C
Acquisition: Nebulosity 3.2.1, no dither
Exposure: 26x600 s
Stacking: Neb 3, bad pixel map, bias included, no flats, OSC extract R, normalize, square, trans+rot align, 1.5 SD stack.
Processing: StarTools 1.3.5.289 Crop; Develop 79.84%; HDR
ptimize; Deconvolute: 3.0 pix; Contrast; Life:Moderate; Track 4.6 pix; Magic 1 pix. Photoshop CC 2014 + Carboni Astronomy Tools Make stars smaller; Hα false color black sky; Astroframe.
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