Wanted to get a new set of images to compare with the 31 Jan set that was taken right next to a bright Moon (this would give me an idea about how much the Moon matters). Synched on Betelgeuse and used the PicGoto; right on, as usual. Needed to refocus periodically, and the mount appeared to be suffering from stiction. Imaged up to the meridian, performed a flip, re-synched on Betelgeuse, reacquired, and continued until the Cone/Christmas Tree set. The Moon matters a lot when it's as close as it was on 31 Jan 2015. This image is far better. HαRRGB coming.
Reprocessed for a little more contrast.
Date: 11 Feb 2015
Subject: NGC 2264, Christmas Tree Cluster/Cone Nebula
Scope: Orion ST80 + Antares 0.5x telereducer
Filter: Baader 7 nm 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 cooling (about 0 °C)
Acquisition: Nebulosity 3.3, no dither
Exposure: 38x600 s
Stacking: Neb 3, bad pixel map, bias included, 30 flats, extract R, histogram match, square, trans+rot align, 1.5 SD stack.
Processing: StarTools 1.3.5.289 Crop; Autodev; HDR
ptimize; Deconvolute 4.5 pix; Track 2.5 pix; Photoshop CC 2014 + Carboni Astronomy Tools Deep space noise reduction; Hα false color black space; Astroframe; assemble into animated GIF.
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