NGC 4244, Silver Needle Galaxy, 30 Apr 2014 (David Dearden)

NGC 4244, Silver Needle Galaxy, 30 Apr 2014

Excellent conditions, save for just a little breeze. Used Cor Caroli as my reference star and easily got to this target using the PicGoto. Very good guiding. Sensor at 13 °C. I'm stopping every hour to refocus using Nebulosity's fine focus feature. Performed a meridian flip, but my guiding is much worse after the flip; this seems to be a recurring thing. It's worse on both axes too. I'm packing it in and going to bed, but I'll leave the scope acquiring. Most of the subframes after the image flip were blurred. I need to figure out why this is happening; likely it is a balance issue, because I know balance is critical with my mount.

Date: 30 Apr 2014

Subject: NGC 4244, Silver Needle Galaxy

Scope: AT8IN + HPS Coma Corrector

Filter: None

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

Guiding: 9x50 Finder/Guider + DSI Ic + PHD 2.2.2 (Win 7 ASCOM)

Camera: DSI IIc no chiller T = 11 °C)

Acquisition: Nebulosity 3.2.0, no dither

Exposure: 21 x 600 s

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

Processing: StarTools 1.3.5.279 Crop; Wipe 79%; Develop 79.57%; HDR

ptimize; Color:Scientific, 250% sat.; Develop: 80.11%; Deconvolute 1.7 pix; Life:Moderate; Track RNC 5.15%; Magic:Shrink 1. CS6 Astronomy Tools increase star color; Healing brush; Astro Frame.

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Status	Basic failed
Started	...
Astrometry.net job	274287
PixInsight job	n/a
PixInsight queue size	n/a
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