NGC 6522 & 6528 (Jim Fordice)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: B298 · HD164655 · HD164685 · HD164952 · HD164976 · HD164996 · HD317008 · HD317011 · HD317013 · HD317014 · HD317017 · LDN 41 · NGC 6522 · NGC 6528 · PK001-03.5 · PK001-03.7

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NGC 6522 & 6528

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NGC 6522 & 6528

I observed NGC 6522 and 6528 on 27 September 2016 at the Okie-Tex Star Party with a 12” Skywatcher Dobsonian. I obtained the calibrated lights frames used to create the final image from Telescope Live. The frames were imaged by the CHI-1-CCD Telescope at the El Sauce Observatory in Chile.

NGC 6522: I spotted this globular cluster first while looking for NGC 6528. I could see both in the eyepiece at 150x. 6522 is brighter than 6528. 6522 is well concentrated and has a large halo. One of the oldest GCs.

Shapley Sawyer Classification: VI
Distance: 25,117 LY
Type: Hub Globular
Position w.r.t. core of galaxy: Just below the MY hub.
Any stars resolved: Yes
Undergoing Core Collapse: Yes

NGC 6528: This globular cluster is bright and well concentrated. At 150x I could see a large halo of dim stars.

Shapley Sawyer Classification: V
Distance: 25,770 LY
Type: Hub Globular
Position w.r.t. core of galaxy: Just below the MY hub.
Any stars resolved: Yes
Undergoing Core Collapse: Yes

We are looking through the disc of the MY to see these paired globular clusters. They make a nice sight.

Globular Star Clusters

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Status	Advanced success
Started	...
Astrometry.net job	7457045
PixInsight job	DBO8JQ1MBXSENSNRH5GX7A358EPJZF7E
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h04m11s.113
RA (top/left)	18h05m20s.325
RA (top/right)	18h02m59s.411
RA (bottom/right)	18h03m01s.480
RA (bottom/left)	18h05m23s.110

Dec (center)	-30°02′42″.57
Dec (top/left)	-29°48′08″.61
Dec (top/right)	-29°48′40″.30
Dec (bottom/right)	-30°17′15″.50
Dec (bottom/left)	-30°16′43″.11

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NGC 6522 & 6528

NGC 6522 & 6528

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NGC 6522 & 6528

NGC 6522 & 6528

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