NGC 6888, Crescent Nebula, 27 Jun 2014 (David Dearden)

NGC 6888, Crescent Nebula, 27 Jun 2014

Conditions started out very well: cool, little wind, clear, no moon. Easily found NGC 6888 with the PicGoto from Sadr. I did have a lot of trouble with my USB connections dropping, which eventually I traced to a bad power connection (for my AC bar to the house). I decided to go with no filter because the night looked so dark. Clouds ended the session prematurely, but I still think this is much better than last year’s image.

Date: 27 Jun 2014

Subject: NGC 6888, Crescent Nebula

Scope: AT8IN

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 chiller at 2.50 A, 8.5 to 5.5 °C

Acquisition: Nebulosity 3.2.0, no dither

Exposure: 36x300 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:Color & brightness 75%; Develop 89.78%; HDR

ptimize; Color:Scientific, 113%; Deconvolute auto mask 2.8 pix; Life:Moderate; Track RNC 3.92%; Magic:Shrink 2 pix: Magic:Shrink 1 pix. Color:Scientific, 115%. CS6 Astronomy Tools Increase star color; Less crunchy more fuzzy; Levels; Astro Frame.

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Status	Basic failed
Started	...
Astrometry.net job	307826
PixInsight job	n/a
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