M8, Central Lagoon Nebula, UHC-S, 7 Jul 2014 (David Dearden)

M8, Central Lagoon Nebula, UHC-S, 7 Jul 2014

Little or no wind, and quite hot. Synched on lambda Sag, but the goto was a little off and I had to manually correct by about 1 field diameter. I had trouble focusing, and there was way too much Moon for this to turn out at its best (I'm trying to convince The Boss that I need a Hydrogen-alpha filter). Chiller running at 2.5 A, CCD at 15.5° down to about 12 °C. I must have had a cable snag during the session so I didn't get much data. Reduced exposures to 180 s to avoid overexposing the core of the nebula. I had intended to use a focal reducer to capture more of the nebula, but I was set up without it so I went with it.

Date: 7 Jul 2014

Subject: M8, Lagoon Nebula

Scope: AT8IN

Filter: Baader UHC-S

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, ~15 down to 12 °C

Acquisition: Nebulosity 3.2.0, no dither

Exposure: 53x180 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 79%; Develop 76.08%; HDR

ptimize; Color:Scientific, 200%; Deconvolute auto mask 2.6 pix; HDR

ptimize; Life:Moderate; Track RNC 1.72%; Magic:Shrink 1 pix; Color:Scientific 145%; Color:Scientific 100% cap green to yellow. CS6 Astronomy Tools Astro Frame.

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Astrometry.net job	314103
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