Messier 27 (HOO) (Linda)

Celestial hemisphere: Northern · Constellation: Vulpecula (Vul) · Contains: Dumbbell Nebula · HD189733 · HD345436 · HD345443 · HD345444 · HD345445 · HD345446 · HD345447 · HD345448 · HD345449 · HD345450 · HD345451 · HD345452 · HD345453 · HD345454 · HD345455 · HD345456 · HD345457 · HD345458 · HD345460 · HD345461 · HD345462 · HD345463 · HD345465 · HD345466 · HD345469 · HD345470 · HD345471 · HD345472 · HD345474 · And 10 more.

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Messier 27 (HOO)

Revision title: Reprocessed

Link: https://lindasastronomyadventures.space/?p=11085

Powered byPixInsight

Messier 27 (HOO)

Revision title: Reprocessed

Link: https://lindasastronomyadventures.space/?p=11085

What's not to love about M27? Granted that photographically it doesn't look much like a dumbbell (my spouse said it looked like cells dividing so maybe it could be the Mitosis Nebula!). My goal for this picture was to show those faint outer fringes without blowing out the detail at the center. I succeeded there but the cost was hurting contrast at the center. I did as much as I could figure out to bring that back but in this image it's the outer edges that are the real focus of my processing.

H and O:
dynamic crop
deconvolution
noiseXterminator
GHS (2 stretches)
starnt2 (saving stars)
histogram transformation to enhane individual contrast a bit

stars:
channel combination (HOO)
morphological transformation erosion
unsharp mask

HOO:
channel combination (hoo)
histogram (to align peaks)
LHE (2 scales)
Curves (color, saturation, a, b, RGB)
noiseXterminator
HDRMT
MLT (sharpening)
pixel math in stars

Overall I was pretty happy with this. The number of distinct shells of gas is amazing to see and the way the hydrogen and oxygen seem to be in layers is fascinating to behold.

Original
Final
B

B

Title: Reprocessed

Description: Since I did the earlier version I've become more adept with the GHS script and in getting better results out of HDRMT. Both of those made a big difference in getting details in the outer shell while preserving detail in the core.

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Status	Advanced success
Started	...
Astrometry.net job	6506645
PixInsight job	VUYMCS5YZOCV9CSN40D6WMS26SEFPQC4
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	19h59m46s.492
RA (top/left)	19h58m22s.361
RA (top/right)	19h58m21s.825
RA (bottom/right)	20h01m11s.100
RA (bottom/left)	20h01m10s.595

Dec (center)	+22°42′56″.58
Dec (top/left)	+22°22′11″.55
Dec (top/right)	+23°03′39″.12
Dec (bottom/right)	+23°03′38″.97
Dec (bottom/left)	+22°22′11″.10

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Messier 27 (HOO)

Revision title: Reprocessed

Messier 27 (HOO)

Revision title: Reprocessed

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Messier 27 (HOO)

Revision title: Reprocessed

Messier 27 (HOO)

Revision title: Reprocessed

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