NGC 4394 and Messier 85 (RGB) (Linda)

Celestial hemisphere: Northern · Constellation: Coma Berenices (Com) · Contains: IC 3292 · M 85 · NGC 4382 · NGC 4394 · PGC 40512 · PGC 40567

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NGC 4394 and Messier 85 (RGB)

Revision title: The 2023 reprocess

Link: https://lindasastronomyadventures.space/?p=11070

Powered byPixInsight

NGC 4394 and Messier 85 (RGB)

Revision title: The 2023 reprocess

Link: https://lindasastronomyadventures.space/?p=11070

I reprocessed this in 2023 and got a better result. The original description and processing details are at the bottom but here's the 2023 reprocessing:

RGB:
channel combination
DBE
SPCC
blurXterminator
starXterminator
noiseXterminator
GHS (GHS, linear, GHS)
HDRMT
LHE
Curves (contrast & color)
MLT (mild sharpening)
pixel math in stars (screen)

stars
GHS
unsharp mask (very mild sharpening)

Original description below:

Galaxy season isn't over yet!

Here are two galaxies in Coma Berenices, NGC 4394 (left) and Messier 85 (right).

According to the sources I checked, M85 is either an elliptical galaxy or a face-on lenticular galaxy. I wonder how one can distinguish between the two since we don't seem to have that ambiguity with most elliptical galaxies. Maybe it's of a size that could be a large lenticular or a smaller elipctical.

NGC 4394 is very obviously a barred spiral and looks to be a companion to M85.

Here's how I processed it:

RGB:
channel combination
dynamic crop
DBE
PCC
NoiseXterminator
GHS
starnet2 (extracting stars)
HDRMT
LHE
Curves (color)
MLT sharpening
pixel math in stars
curves (contrast)

stars:
unsharp mask (mild)

Original
Final
B

B

Title: The 2023 reprocess

Description: see main text for details

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	8078112
PixInsight job	BJN0JLW2RK1VQEGDQ23633VAMWM4YAPG
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h25m35s.321
RA (top/left)	12h26m55s.545
RA (top/right)	12h24m13s.572
RA (bottom/right)	12h24m15s.300
RA (bottom/left)	12h26m56s.702

Dec (center)	+18°11′16″.65
Dec (top/left)	+18°23′34″.52
Dec (top/right)	+18°23′01″.92
Dec (bottom/right)	+17°58′56″.29
Dec (bottom/left)	+17°59′31″.55

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NGC 4394 and Messier 85 (RGB)

Revision title: The 2023 reprocess

NGC 4394 and Messier 85 (RGB)

Revision title: The 2023 reprocess

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Image Index:

Contribution Index (beta):

NGC 4394 and Messier 85 (RGB)

Revision title: The 2023 reprocess

NGC 4394 and Messier 85 (RGB)

Revision title: The 2023 reprocess

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

In these public groups

In these collections

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