UGC 11909 (lowenthalm)

Celestial hemisphere: Northern · Constellation: Lacerta (Lac) · Contains: PGC 68029 · TYC3609-1001-1 · TYC3609-123-1 · TYC3609-127-1 · TYC3609-237-1 · TYC3609-2590-1 · TYC3609-2617-1 · TYC3609-2657-1 · TYC3609-619-1

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UGC 11909

Acquisition type: Lucky imaging

Powered byPixInsight

UGC 11909

Acquisition type: Lucky imaging

This is a galaxy on the Lacerta-Cygnus border that peeks out below the galactic plane (toward the southern galactic pole). It's still behind the band of the Milky Way, so there seemed to be some faint dust and/or Hydrogen alpha emission across the field with a hole around where the galaxy is seen in the image.

I can't find any decent reference images this dusty edge on spiral galaxy other than in the DSS, PanSTARRs and ZTF sky surveys. The galaxy is fairly large and bright at 12.3 visual magnitude and being about 2.5 arc minutes long, so odd that there aren't more images of it to be found. Seeing was decent, but not great so the stars are definitely a bit bloated. I captured the image data last summer, but wasn't happy with my first processing attempt. I just recently tried again and got a result I was more satisfied with, which I present here.

Tully-Fisher measurements of the galaxy (a relationship between rotation rate and brightness of spiral galaxies) put this galaxy at somewhat over 42 million light years away. Based on its angular size and assuming this distance, the galaxy should be about 37,000 light years across, which is well less than half the diameter of our own galaxy.

I think I might try imaging this galaxy again this year under better seeing conditions to see if I can get better dust lane detail.

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Galaxies - small and unusual

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Status	Advanced success
Started	...
Astrometry.net job	5808356
PixInsight job	NEC83PX0TC53VCGEKXUAT6LXBJ3821WQ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h06m18s.495
RA (top/left)	22h05m52s.652
RA (top/right)	22h05m37s.918
RA (bottom/right)	22h06m44s.144
RA (bottom/left)	22h06m59s.271

Dec (center)	+47°14′57″.80
Dec (top/left)	+47°23′39″.59
Dec (top/right)	+47°08′05″.42
Dec (bottom/right)	+47°06′16″.30
Dec (bottom/left)	+47°21′49″.22

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