NGC 3718 & 3729, 6 Apr 2013 (David Dearden)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 3718 · NGC 3729

NGC 3718 & 3729, 6 Apr 2013

Found with the Telrad after a little casting about. The key was the two closely-spaced bright stars just south of NGC 3718. The fuzzies are visible with about 5 sec subframes in the imager. I can't see them in the guider at 1 s. The galactic cluster south of NGC 3718 is a bonus. I was too lazy to set up the chiller tonight, so the CCD is at 10.5 °C. Clouds rolled in and ended a very nice session quite prematurely, so this is a clear case of not enough data. I could have taken longer subframes than the 300 sec I used, as well.

Date: 6 Apr 2013

Subject: NGC 3718, NGC 3729

Scope: AT8IN + High Point Scientific Coma Corrector

Filter: None

Mount: CG-5 (Synta motors)

Guiding: 9x50 Finder/Guider + DSI Ic + PHD 1.14.01

Camera: DSI IIc (chiller, T = 1.5 °C)

Acquisition: Nebulosity 3.1.5, no dither

Exposure: 16x300 s

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

Processing: StarTools 1.3 Crop, Mask out the galaxies, Wipe, Develop, HDR:Equalize, Deconvolute:3, Track, Magic:Shrink 1 pixel, Life:Moderate Sat. 100; CS6 Astronomy Tools Gaussian-blurred Layer Mask to darken background noise, Star Color Enhance, AstroFrame.

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Status	Basic success
Started	...
Astrometry.net job	6884552
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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