Leo I Dwarf Galaxy (UGC5470, Regulus Dwarf, PGC29488) (Mau_Bard)

Celestial hemisphere: Northern · Constellation: Leo (Leo) · Contains: 32 alf Leo · IC 591 · PGC 1399490 · PGC 1400704 · PGC 1401257 · PGC 1401469 · PGC 1402742 · PGC 1403844 · PGC 1404468 · PGC 1405954 · PGC 1406017 · PGC 1408734 · PGC 1409943 · PGC 1410414 · PGC 1411808 · PGC 213668 · PGC 2800957 · PGC 29488 · PGC 29497 · PGC 29573 · PGC 3090973 · Regulus · The star Regulus (αLeo)

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Leo I Dwarf Galaxy (UGC5470, Regulus Dwarf, PGC29488)

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Leo I Dwarf Galaxy (UGC5470, Regulus Dwarf, PGC29488)

I have recorded this image from my backyard in Bortle 6 area.

I made the series of exposures, with little hope to pick up any signal from such a faint object under a "white" suburban sky. I was surprised to find that it was there after calibration and integration.

My setup has its own significant vignetting which, combined with the specific gradient of the image, made them quite difficult and time-consuming to process together by using PixInsight's ABE and Multiscale Median Transformation techniques.

After that, the presence in the field of the powerful star Regulus and the strong optical reflections made the work more complex than usual.

Leo I is a dwarf galaxy part of our Local Group, 840kly away.

Because of its proximity to Regulus, it was discovered only in 1950.

Several other distant galaxies embellish the field, among others: IC591 (137Mly away) and PGC29573 (395Mly distance).

Light Polluted skies
Optolong L-Pro filter
ZWO ASI 2600MC PRO
Suburban Astrophotography
N.I.N.A. Users
Imagers of Italy
PixInsight Addicts

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Status	Advanced success
Started	...
Astrometry.net job	4333489
PixInsight job	1XD10V2KO7RO8K0GHJYJSX156FZ12V3U
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	10h08m23s.153
RA (top/left)	10h05m41s.214
RA (top/right)	10h11m06s.990
RA (bottom/right)	10h11m05s.678
RA (bottom/left)	10h05m39s.816

Dec (center)	+12°09′31″.34
Dec (top/left)	+11°42′50″.64
Dec (top/right)	+11°43′10″.25
Dec (bottom/right)	+12°36′07″.25
Dec (bottom/left)	+12°35′45″.59

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Leo I Dwarf Galaxy (UGC5470, Regulus Dwarf, PGC29488)

Leo I Dwarf Galaxy (UGC5470, Regulus Dwarf, PGC29488)

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Leo I Dwarf Galaxy (UGC5470, Regulus Dwarf, PGC29488)

Leo I Dwarf Galaxy (UGC5470, Regulus Dwarf, PGC29488)

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