Pacman Nebula HaRBG (Stephen Migol)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1590 · NGC 281

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Pacman Nebula HaRBG

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Pacman Nebula HaRBG

NGC 281 HaRGB in Menlo Park, CA Sept 2013

The RGB data came from sessions over 3 nights in variable conditions. I had to be aggressive in trimming the bad subexposures. I was also adjusting the flattener position during these sessions, leading to strange star images on the edge.

The Ha data came from Sept 15 with a past-first quarter moon blazing in the sky. The filter used is a 35nm wide filter, letting a fair amount of light through. The dark part of the sky in this set was pretty noisy.

Standard setup: Stellarvue SV4 scope with the modified and cooled Pentax K10D camera. Standard sub length of 1200 seconds at 100 ISO.

RGB: 18 total frames at 1200 seconds for 6 horus of integration.

Ha: 6 frames at 1200 seconds for 2 hours of integration.

Calibrated in Maxim (one set of RGB data had bad flats with moving dust motes)

Stacked in DSS (RGB and Ha stacked separately)

RGB and Ha registered in PixInsight via StarAlign.

Dead pixels in Ha were cleaned up.

Ha was run through TGVDenoise to improve the background a bit before merging via NBRGB script.

DBE on merged output. Masked stretch, Histogram stretch, MT, and TGVDenoise again to fix noisy background. Masked curves to drive background lower and boost midrange. Final step was to fix the dust motes from bad flats.

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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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Unknown

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Status	Advanced failed
Started	...
Astrometry.net job	6562346
PixInsight job	Z198WBXUO8ZHLFFM9S7UAQDG85Q62YIL
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

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Pacman Nebula HaRBG

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