NGC 3718 & 3729, 6&11 Apr 2013 (David Dearden)

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

NGC 3718 & 3729, 6&11 Apr 2013

Found pretty easily via the Telrad and the two closely spaced 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. This image combines subframes from 6 April with those from 11 April. I’m collecting proof positive that setting up my gear causes high clouds to form, because that keeps happening every time I try this target (Utah weather in spring! At least I’m getting a little bit of clarity from time to time).

Date: 6 & 11 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 1.14.2

Camera: DSI IIc (no chiller, T = ~5 °C)

Acquisition: Nebulosity 3.1.5, no dither

Exposure: 32x300 s

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

Processing: StarTools 1.3 Crop, Develop, Mask out the galaxies, Wipe:Color only, Develop, Color:cap green to brown, saturation 1000%, bottom 1.5 top 9.2; HDR:Reveal, Deconvolute:3.2 pix, Track, Magic:Shrink (brighter stars only), Life:Isolate, Wavelet Denoise. CS6 Astronomy Tools Star Color Enhance, AstroFrame.

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Status	Basic success
Started	...
Astrometry.net job	7415867
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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