SH2-101, Tulip Nebula, Hα, 15 Aug 2014 (David Dearden)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: B144 · Sh2-101

SH2-101, Tulip Nebula, Hα, 15 Aug 2014

The Tulip Nebula seemed like it would be a good Hα target because it is mostly Hα emission. It was my second target of the evening, and was an easy find after synching in Sadr with the goto dead on. The sky was quite clear and conditions were good save for a bit of gusty wind. I initially had balance issues with the mount and had to rebalance after getting an unsatisfactory PHD2 calibration.

Date: 15Aug 2014

Subject: SH2-101, Tulip Nebula

Scope: AT8IN+0.5x Antares telereducer

Filter: Baader Planetarium 7 nm H-α

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

Guiding: 9x50 Finder/Guider + DSI Ic + PHD 2.3.0 (Win 7 ASCOM)

Camera: DSI IIc chiller at 2.50 A, 14 °C

Acquisition: Nebulosity 3.2.0, no dither

Exposure: 22x600 s

Stacking: Neb 3, bad pixel map, bias included, extract R, normalize, square, trans+rot align, 1.5 SD stack, resize 2x,.

Processing: StarTools 1.3.5.279 Crop; Wipe:Color & brightness 75%; Develop 75.54%; HDR:Equalize; Deconvolute 2.7 pix; Life:Moderate; Track RNC 0.01%; CS6 AstronomyTools B&W to Hα; deep space noise reduction; Astro Frame.

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Status	Advanced success
Started	...
Astrometry.net job	342373
PixInsight job	EOU1ECU07LXIBPMQ0LZJRO4BUDH0QR23
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	19h59m58s.83
RA (top/left)	19h58m28s.51
RA (top/right)	19h58m34s.20
RA (bottom/right)	20h01m28s.23
RA (bottom/left)	20h01m23s.92

Dec (center)	+35°18′38″.5
Dec (top/left)	+35°40′35″.10
Dec (top/right)	+34°55′48″.1
Dec (bottom/right)	+34°56′41″.8
Dec (bottom/left)	+35°41′33″.7

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SH2-101, Tulip Nebula, Hα, 15 Aug 2014

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