Koposov 2 - the most distant globular cluster of our Milky Way (Riedl Rudolf)

Celestial hemisphere: Northern · Constellation: Gemini (Gem) · Contains: PGC 1766351 · PGC 1768640 · PGC 1770775 · PGC 1771333 · PGC 1772943

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Koposov 2 - the most distant globular cluster of our Milky Way

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Koposov 2 - the most distant globular cluster of our Milky Way

Koposov 2 is a GC which was discovered together with Koposov 1 in 2007. Its the most distant GC with a distance of 160.000 Lj. of our Milky Way. He is with a magnitude of -1 mag the faintest GC at all. 2 very faint background galaxies can be seen through the globular. The size is 1 arcmin only.
Mr. Koposov made a HR Diagram from where here realized the nature of the GC. Whats unique is the age of the cluster which is estimated to be between 8 to 10 billion years. The cluster is located in Gemini. He can be recorded best in the IR-wavelength.

The cluster can just be seen above the galaxy PGC 1768640 in middle of the picture.

The 2nd picture shows a comparison between my own picture at the left side, the discovery picture from the Sloan digital survey, a picture from the public observatory in Munich/Germany and finally a picture from Calar Alto where the nature of the GC can really be seen properly.

I have not found any picture/information about this GC on Astrobin, therefore I assume its the first one.

Final
Original
B

The OSC Club (One Shot Camera)
Nikon Imagers
First on Astrobin
Schmidt-Cassegrain Telescope (SCT) Imagers
Rarely Imaged Small DSOs

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Status	Advanced success
Started	...
Astrometry.net job	5844104
PixInsight job	OLYNLFGP1W0HEMU9ZZOSKVIFLMYYX6T6
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	07h58m14s.219
RA (top/left)	07h59m07s.820
RA (top/right)	07h57m18s.545
RA (bottom/right)	07h57m21s.408
RA (bottom/left)	07h59m09s.687

Dec (center)	+26°14′33″.22
Dec (top/left)	+26°22′43″.76
Dec (top/right)	+26°21′46″.11
Dec (bottom/right)	+26°06′21″.24
Dec (bottom/left)	+26°07′19″.98

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Koposov 2 - the most distant globular cluster of our Milky Way

Koposov 2 - the most distant globular cluster of our Milky Way

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Koposov 2 - the most distant globular cluster of our Milky Way

Koposov 2 - the most distant globular cluster of our Milky Way

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