NGC 3628 (Mark L Mitchell)

Celestial hemisphere: Northern · Constellation: Leo (Leo) · Contains: IC 2745 · NGC 3628

NGC 3628

I’ve imaged the galaxy trio near Leo’s hind leg before. It comprises M65 and M66 that are spiral galaxies seen en face and NGC 3628, a spiral galaxy seen on edge.

These galaxies are orbiting each other and they show various gravitational effects. This was an attempt to image NGC 3628 by itself to try and detect its tidal tail.

NGC 3628 is about 35 Mly away. It is usually called the Hamburger galaxy, but it has also been called Sarah’s galaxy (I don’t know why. One internet blog says that

it is named for a 19th-century poet, probably before 1884 when a Hamburger was still just someone who lived in Hamburg). It has very prominent central dust lanes that appear split at one end. It’s also one of the galaxies that has its constituent stars revolving in the direction opposite the gas clouds in the galaxy, a sign of galactic interaction. NGC 3628 has a dim tidal tail of stars that extends for 300,000 light-years.

This is a 14.25-hour LRGB exposure taken over four nights this month. A small part of the tidal tail is just visible.

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Description: With the sharpening on the galaxy pushed.

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Description: Annotated w frame

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The refractors!

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Status	Advanced success
Started	...
Astrometry.net job	4353078
PixInsight job	FQPARSYUWQYBDXELRXEYIOGJRUVXLR53
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	11h21m06s.177
RA (top/left)	11h19m13s.439
RA (top/right)	11h22m08s.139
RA (bottom/right)	11h22m59s.190
RA (bottom/left)	11h20m03s.974

Dec (center)	+13°29′24″.70
Dec (top/left)	+13°19′40″.95
Dec (top/right)	+13°04′30″.94
Dec (bottom/right)	+13°39′03″.50
Dec (bottom/left)	+13°54′15″.96

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