Celestial hemisphere:  Northern  ·  Constellation: Camelopardalis (Cam)  ·  Contains:  NGC 2336
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NGC 2336, OSC, 31 Dec 2015, David Dearden
NGC 2336, OSC, 31 Dec 2015
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NGC 2336, OSC, 31 Dec 2015

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Description

I’ve gone back to using my ST-80 scope for guiding, which is what I initially bought it for. I haven’t used it lately because I went to a 9x50 finder/guider to try to save weight. No need for that with the EQ-6 mount. My intent was to use Sequence Generator Pro for this image, but I had all kinds of trouble trying to get it working (couldn’t get it to connect to PHD2, among other things) and eventually just imaged with my Nebulosity workflow. This is a beautiful and not so frequently imaged spiral galaxy (technically, I think it’s actually a barred spiral, but you can’t see the bar in my image). Something caused a camera disconnect right after I went to bed so I got less data than intended. In attempting to use SGP’s autofocus routines, I messed up the focus and never really recovered it (when temperatures are cold, as they were last night, my autofocuser tends to freeze up) so this image is much less than it could be. If it’s clear tonight, I’ll probably try again. And I think I have SGP working now, at least with the simulators, so I’ll try that again after watching a few tutorials.

Date: 31 Dec 2015

Subject: NGC 2336

Scope: AT8IN

Filter: Baader UHC-S

Mount: EQ-6 (EQMOD)

Guiding: Orion ST-80 + DSI Ic + PHD 2.5.0.9 (Win 7 ASCOM)

Camera: DSI IIc, no chiller CCD -10 °C

Acquisition: Nebulosity 4.0.4, no dither

Exposure: 30x600 s

Stacking: Neb 4, bad pixel map, bias included, 33 flats, match histograms, demosaic & square, trans+rot align, DSS 2x drizzle with σ = 1.75 κ-σ stacking.

Processing: StarTools 1.4.305: Crop; Wipe; Develop: 85.54%; HDR: Optimize; Color:Scientific, 200% sat; Deconvolute: 3.6 pix; Track: Smoothness 94%, 9.1 pix; Magic: shrink 6 pix; Photoshop CS6 + Astronomy Tools: deep space noise reduction; Levels; increase star color; make stars smaller; Astroframe.

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NGC 2336, OSC, 31 Dec 2015, David Dearden