The Grus Triplet: NGC 7582, 7590 and 7599 (& background galaxies) (Alex Woronow)

Celestial hemisphere: Southern · Constellation: Grus (Gru) · Contains: IC 5308 · NGC 7582 · NGC 7590 · NGC 7599

The Grus Triplet: NGC 7582, 7590 and 7599 (& background galaxies)

The Grus Triplet: NGC 7582, 7590 and 7599 (& background galaxies)

OTA: RCOS (12.5” f/8)

Camera: SBIG STXL11002

Observatory: Heaven’s Mirror, Au

EXPOSURES:

Red: 9 x 1200”

Blue: 11 x 1200

Green: 13 x 1200

Lum: 44 x 1200

Total exposure ~26 hours

Image Width: ~1/2 deg

Processed by Alex Woronow (2020) using PixInsight, Skylum, Topaz, SWT

This galaxy triplet lies in the southern constellation of Grus and the three spiral galaxies (NGC 7582, 7590, 7599) exhibit telltale signs of gravitational interactions, such as the distortions of the upper two galaxies distending them toward the lower, NGC 7582 galaxy. Numerous other galaxies occur in this field-of-view. Often they are easily distinguished from the stars by their extended fuzzy halos or oblong shapes. The background galaxies lie at a much greater distance than the triad, which is about 60M light-years away.

For the record, there’s a fourth member to this “Quartet”: NGC 7552. It lies about 1/2 deg toward the SW, out of this field-of-view.

Final
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Description: Annotated (improved)

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Objects of the South - negative declination only

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Status	Advanced success
Started	...
Astrometry.net job	3198646
PixInsight job	LVGMIZJ63K3KXV94D9YPVBOLBTHU03XN
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	23h18m43s.240
RA (top/left)	23h20m38s.565
RA (top/right)	23h17m59s.999
RA (bottom/right)	23h16m47s.788
RA (bottom/left)	23h19m27s.242

Dec (center)	-42°18′01″.80
Dec (top/left)	-42°14′30″.55
Dec (top/right)	-41°57′57″.44
Dec (bottom/right)	-42°21′25″.41
Dec (bottom/left)	-42°38′03″.42

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The Grus Triplet: NGC 7582, 7590 and 7599 (& background galaxies)

The Grus Triplet: NGC 7582, 7590 and 7599 (& background galaxies)

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The Grus Triplet: NGC 7582, 7590 and 7599 (& background galaxies)

The Grus Triplet: NGC 7582, 7590 and 7599 (& background galaxies)

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