Shakhbazian 1 - Very Dense Galaxy Cluster

Objekt / Object: Shakhbazian Compact groups of compact galaxies Shk 1; Con: UMa; Mag.(V): 16.0 - 19,3;
Groesse/Diamter: 1 arcmin
Datum / Date: 2011-02-10
Zeit / Time: 24 x 300s - 20:58:05h UT
Aufnahmeort / Location: Irmtraut/Westerwald - Germany
Objektentfernung / Objectdistance: ca.1,5 Milliarden Lichtjahre / ca. 1.5 billion lightyears
Instrument: ST-10 XME - 12"Newton, f/4,8
Montierung / Mount: Alt 6 AD
Kamera: SBIG ST-10XME
Nachführung / Guiding: SBIG selfguiding
Aufnahmeort / Location: Irmtraut/Westerwald - Germany
Bemerkungen / Note: In 1957 the Armenian astronomer Shakhbazian discovered a small compact group of
compact galaxies clustered tightly in constellation Ursa Major. 16 Years later Lloyd Robinson
and Joe Wampler examined the cluster. All cluster members lie at the same distance. In 1973 Halton Arp
studied the cluster. Arp could not find young stars. He concluded: "nothing more than a giant size
globular cluster"! With 5-meter Palomar telescope Robert Kirsher and Eliot Malumuth found that the
compactness of cluster is very high. Result of galactic cannibalism events.This object is definitely
a challenge object to observe. The individual galaxies are under an arc second in diameter and appearing
"star-like". The visual magnitudes of cluster members are very faint.

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