Messier 83 (The Southern Pinwheel Galaxy) in RGB (Ian Parr)

Celestial hemisphere: Southern · Constellation: Hydra (Hya) · Contains: M 83 · NGC 5236 · Southern Pinwheel Galaxy

Messier 83 (The Southern Pinwheel Galaxy) in RGB, Ian Parr

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Messier 83 (The Southern Pinwheel Galaxy) in RGB

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Messier 83 (The Southern Pinwheel Galaxy) in RGB

Messier 83, known as the Southern Pinwheel Galaxy and NGC 5236, is a massive, grand design spiral galaxy approximately 15 million light-years away in the constellation borders of Hydra and Centaurus. It is one of the closest and brightest barred spiral galaxies in the sky, and is visible with binoculars. Apparent magnitude is 7.6 and is arounf 12′.9 × 11′.5 arcminutes in size.

With something like this over-head it's hard to go past it so I got a lot more exposures under pretty good conditions and added them to the best of previous nights results.
Even after ruthess cuilling in SubframeSelector, I had more than 30 frames in each channel which is more than enough to use ESD for image integration.

Unless I can move to a darker site with a bigger scope, I doubt I can do any better.

BlurXTerminator's Non-Stellar shapening is proving highly problematic so I just use Correction on each channel, then calculate the PSF on those corrected frames and apply a little sharpening and NO Non-Stellar treatment until I get to the masked Starless stage. I am finding Non-Steller sharpening is causing severe degredation around the edges of the image, even on a preview, so based on that and reports of clipping issues that Russel Croman is working on now for a future library release, I only use a very light BX Non-Stellar treatment after Local Histrogram Equalisation on the starless masked core and that seems to give a balanced result that doesn't hurt my eyes.

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Status	Basic success
Started	...
Astrometry.net job	7920949
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Messier 83 (The Southern Pinwheel Galaxy) in RGB

Messier 83 (The Southern Pinwheel Galaxy) in RGB

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Messier 83 (The Southern Pinwheel Galaxy) in RGB

Messier 83 (The Southern Pinwheel Galaxy) in RGB

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