Leo Triplet (M66, M65, NGC 3628) (Linwood Ferguson)

Celestial hemisphere: Northern · Constellation: Leo (Leo) · Contains: HD98388 · IC 2745 · Leo Triplet · M 65 · M 66 · NGC 3623 · NGC 3627 · NGC 3628 · PGC 1415372 · PGC 1416552 · PGC 1416695 · PGC 1417198 · PGC 1417925 · PGC 1421317 · PGC 1422720 · PGC 1423398 · PGC 1425272 · PGC 1429092 · PGC 1430330 · PGC 1430824 · PGC 1431196 · PGC 1431922 · PGC 1432894 · PGC 1437871 · PGC 1439902 · PGC 1440118 · PGC 1440966 · PGC 1441051

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Leo Triplet (M66, M65, NGC 3628)

Revision title: Leo Triplet (M66, M65, NGC 3628) less noise

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Leo Triplet (M66, M65, NGC 3628)

Revision title: Leo Triplet (M66, M65, NGC 3628) less noise

This is the Leo Triplet with my SVX152T with SV Flattener. It is a lot of time from my back yard (B7) and one night from Big Cypress dark site (B3).

I was pleasantly surprised to find a bit of tidal tail on NGC 3628, but even more surprised to see the huge number of tiny galaxies in the background, so am leaing this at the original image scale of about 0.62"/px.

This was done on an AP1100AE mount, and ASI6200MM mono in RGB with a bit of Ha (Chroma filters).

There is 12.5 hours of Red, 13.3 hours of Green, and 12.75 hours of Blue, plus 9.7 hours of Ha (added after RGB combine at 20% of red).

This was imaged in R, G, B only and a synthetic luminance produced by the mean of those channels to blend back in as a luminance. The Ha was added after stretch and luminance combine.

I would welcome suggestions and criticism.

Linwood

Original
Final
B

B

Title: Leo Triplet (M66, M65, NGC 3628) less noise

Description: This revision includes some denoise steps with a special thanks to @Arun H for the technique, though the deficiencies of course remain mine.

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Status	Advanced success
Started	...
Astrometry.net job	7427425
PixInsight job	CCXR5PPPQIW5K5GCDCA6U7JDTLFNKXTS
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	11h20m11s.286
RA (top/left)	11h18m21s.326
RA (top/right)	11h18m21s.204
RA (bottom/right)	11h22m00s.716
RA (bottom/left)	11h22m01s.785

Dec (center)	+13°17′30″.18
Dec (top/left)	+13°50′59″.99
Dec (top/right)	+12°44′04″.92
Dec (bottom/right)	+12°43′59″.99
Dec (bottom/left)	+13°50′51″.63

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Leo Triplet (M66, M65, NGC 3628)

Revision title: Leo Triplet (M66, M65, NGC 3628) less noise

Leo Triplet (M66, M65, NGC 3628)

Revision title: Leo Triplet (M66, M65, NGC 3628) less noise

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Leo Triplet (M66, M65, NGC 3628)

Revision title: Leo Triplet (M66, M65, NGC 3628) less noise

Leo Triplet (M66, M65, NGC 3628)

Revision title: Leo Triplet (M66, M65, NGC 3628) less noise

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