M17 Hubble Palette - PixInsight Learning (Chris Ryan)

M17 Hubble Palette - PixInsight Learning

I have been learning how to use PixInsight over the last couple of months. This is the first image I've got enough real data to try for a Hubble palette.

Version A: I don't know how to process the stars right yet, so they're no good and some need deblooming. The Ha was very dominating.

Versions B and C are after learning some more via tutorials plus experimentation. I like the finer details on them, but aren't happy with the star colours or the lack of sharpness.

Version D is more experimentation, but I black clipped too much. The stars a bit better overall.

Version E: I went back to scratch after a few weeks break. I think I improved the initial processing of the images (calibration, noise removal, etc) than my other attempts. I had more of an attempt to fix the stars with this one, but it might be overdone.

Version F: I backed off some version E's histogram manipulation and tried some dark structure enhancement (via script). I think it's more "technically" correct for most of the background not to be dark given the region, but it seems strange. A larger mosaic of the area would probably disguise this better.

Version G continues from version F, with deconvolution (star masked) for a final sharpen.

Version H continues from version G - I couldn't handle the background being so light, so this is just darkening the shadows.

Version I: Based on the previous 4 versions, I backtracked in history and did the deconvolution near the start of the process. This was still quite difficult to get right as I struggled to get a decent mask. If you look closely, you'll see a few stars are dark ringed still. However, I like this version a lot more because it brings out the nebula details. Given that I think those details were better data in these images than the stars, I'll go with this for now.

	Distinct awarded users	Total awarded images
Image of the day
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	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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Status	Basic success
Started	...
Astrometry.net job	382165
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M17 Hubble Palette - PixInsight Learning

M17 Hubble Palette - PixInsight Learning

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M17 Hubble Palette - PixInsight Learning

M17 Hubble Palette - PixInsight Learning

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