M19 (Gary Imm) - AstroBin

Celestial hemisphere: Southern · Constellation: Ophiuchus (Oph) · Contains: M 19 · NGC 6273

M19

This Messier globular cluster is located 30,000 light years away in the constellation of Ophiuchus at a declination of -26 degrees. It is a magnitude 5.6 cluster which spans 10 arc-minutes in our apparent view. This corresponds to a diameter of 90 light years. It has a medium concentration, with a Shapley–Sawyer Rating of 8 (out of 12).

The cluster is one of the most elongated clusters in shape and is oriented north-south. Despite being the 4th brightest Messier globular in visual magnitude, a distinct brown dust lane cuts across the center of the cluster. Are these 2 features related - the horizontal brown dust lane and the vertical cluster elongation? One possibility is that dust is causing light extinction in the east-west edges of the cluster, making the cluster look oblong to our view.

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Status	Advanced success
Started	...
PixInsight job	QH2G0JR95PPK82L5QVNKN799J54DSOFS
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	17h02m37s.762
RA (top/left)	17h04m11s.310
RA (top/right)	17h01m06s.376
RA (bottom/right)	17h01m04s.122
RA (bottom/left)	17h04m09s.280

Dec (center)	-26°16′09″.19
Dec (top/left)	-26°02′29″.29
Dec (top/right)	-26°01′49″.83
Dec (bottom/right)	-26°29′43″.81
Dec (bottom/left)	-26°30′23″.16

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