Messier 83 (Scott Stirling)

Messier 83

Cropped after calibration down to about 1/10th of the full FOV for this FLI camera, TOA 1100mm focal length and target. Registered to the crop w/drizzle enabled, integrated w/drizzle files, then DrizzleIntegration to produce larger version for each channel.

LRGB result.

Reducing magenta, similar to how we do with SHO images, commonly, also works well on galaxies and stars, leaving a more balanced blue and red galaxy, less purple or magenta (when saturation is increased) - then, reduce blue slightly to allow the red to emerge more.

Used deconvolution w/PSF on the luminance, and MSLT noise reduction, then stretched, HDRMT and various tweaks with GAME script generated mask and Curves and LocalHistogramEqualization, CloneStamp to manually fix several bad/dark pixels noticeable in a few bright stars resulting from DrizzleIntegration with pixel rejection enabled for a minimal set of subframes.

R = 12x 600s

G = 14x 600s

B = 12x 600s

L = 18x 600s

H = 12x 1800s

Original
D
E
Final
H

D

Description: TOP PICK version

Uploaded: ...

E

Description: unsure which version is better/preferable but this one maybe slightly sharper and better color, definitely brighter as I recombined the luminance and RGB again. That brought out the stars more and made them slightly larger, and may have lost some contrast ... hard to improve substantially, will revert the main to the previous revision.

Uploaded: ...

H

Description: w/Ha but now the colors are funked ... still figuring that one out. After working on one of these for a while, you start to really lose perspective visually; something in the eyes/brain gets saturated, loses sensitivity temporarily. Have to take a break and come back to it until it feels and looks right or at least better.

Uploaded: ...

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catalog: Messier
Deep Sky West: Takahashi TOA-150B and FLI ML16200

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Status	Advanced success
Started	...
Astrometry.net job	3303299
PixInsight job	B91JKBMCJKV5KCJP2QR06SZW1YWT0QOC
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	13h36m59s.999
RA (top/left)	13h36m04s.593
RA (top/right)	13h37m45s.265
RA (bottom/right)	13h37m55s.208
RA (bottom/left)	13h36m14s.896

Dec (center)	-29°52′02″.85
Dec (top/left)	-30°01′16″.93
Dec (top/right)	-30°03′35″.17
Dec (bottom/right)	-29°42′47″.59
Dec (bottom/left)	-29°40′29″.41

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Messier 83

Messier 83

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Messier 83

Messier 83

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H

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Sky plot

Histogram

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