NGC 5907, Splinter Galaxy, 14 Jun 2013 (David Dearden)

Celestial hemisphere: Northern · Constellation: Draco (Dra) · Contains: NGC 5907

NGC 5907, Splinter Galaxy, 14 Jun 2013

The Splinter Galaxy is easy to find in Draco because it is near an easily visible star that can be used to place the Telrad, and there is a 3-star asterism pointing at it that allows it to be found in the scope. It is visible at 2 s in the imager and the guider. Chiller at 2.5 A, starting at 12 °C falling to 10 °C. Excellent conditions and guiding performance tonight. Had some problems rebalancing after the meridian flip, so I'll have to see how those subs turn out (they turned out to be some of the best).

In the B revision, I stretched a little less.

Date: 14 Jun 2013

Subject: NGC 5907, Splinter Galaxy

Scope: AT8IN + HPS Coma Corrector

Filter: None

Mount: CG-5 (Synta motors)

Guiding: 9x50 Finder/Guider + DSI Ic + PHD 1.14.2

Camera: DSI IIc (chiller at ~2.5 A, T = 10-12 °C)

Acquisition: Nebulosity 3.1.6, no dither

Exposure: 25x300 s

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

Processing: StarTools 1.3 Crop; Wipe:Color & Brightness; Develop 95.97%; Contrast; HDR:Equalize; Deconvolute: 3.0 pix; Track; Color:Bottom 2.0, Top Full, Sat 600%; Wipe:Amp glow; Magic:Shrink 2; Life:Moderate. CS6+Astronomy Tools increase star color; deep space noise reduction; space noise reduction; Gaussian blurred layer mask high pass filter 3 pix; layer masked less crunchy more fuzzy; AstroFrame.

Final
Original
B
C

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Status	Basic success
Started	...
Astrometry.net job	6564581
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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