Messier 94 (HaRGB) (Linda)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: M 94 · NGC 4736 · PGC 2174346 · PGC 2174701 · PGC 2175000 · PGC 2178511

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Messier 94 (HaRGB)

Link: https://lindasastronomyadventures.space/?p=11023

Powered byPixInsight

Messier 94 (HaRGB)

Link: https://lindasastronomyadventures.space/?p=11023

This might be the first time I don't want galaxy season to end! I'm really enjoying imaging these galaxies this year!

Messier 94 is a spiral galaxy in Canes Venatici. It's unusual visually in that it has a ring around the disk. It's unusual in ways we can't directly see because it has little to no dark matter. I don't think those two facts are related but it definitely makes M94 something of an unusual galaxy.

Processing for revision C
H:
pixel math - h - r * scale

R:
pixel math: r + (h-med(h)) * scale

RGB:
RGB combination
dynamic crop
blurxterminator
GHS (partial stretch)
starxterminator (extracting screened stars)
noisexterminator
GHS (final stretch)
HDRMT (heavily masked)
LHE (heavily masked)
MLT (very very mild sharpening)
pixel math in stars (screen)

stars:
GHS (minor inverted stretch)
unsharp mask (mild sharpening)

Processing for original version:
RGB
RGB Combination
dynamic crop
deconvolution
generalized hyperbolic stretch
starnet2 (extracting stars)
tgv denoise
HDR multiscale transform
curves for contras & color
LHE
MLT sharpening
pixel math in stars
ez star reduction

Original
Final
C

C

Description: This is a rework of the data using BlurXterminator and also is not quite so heavy handed in the attempt to bring out detail.

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Status	Advanced success
Started	...
Astrometry.net job	6873597
PixInsight job	Z0QV2L8WHIIH04Y5PAS1EYYPXDH8AQEO
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h50m52s.833
RA (top/left)	12h52m18s.341
RA (top/right)	12h49m25s.172
RA (bottom/right)	12h49m27s.893
RA (bottom/left)	12h52m19s.946

Dec (center)	+41°07′08″.16
Dec (top/left)	+41°19′53″.10
Dec (top/right)	+41°19′21″.33
Dec (bottom/right)	+40°54′19″.19
Dec (bottom/left)	+40°54′50″.92

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Messier 94 (HaRGB)

Messier 94 (HaRGB)

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Messier 94 (HaRGB)

Messier 94 (HaRGB)

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