Deep Sky Object in Summer
Abell2199 (Galaxy Cluster in Hercules)
|Date & Time: ||Mar 17 2007, from 25:07 to 26:03 JST(+0900)
|Composed 6 shots with 10 minutes exposed|
|Optical: ||Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
|Auto-guided with Meade LX200 Equatorial & Pictor 201XT
|Digital Camera: ||Fujifilm FinePix S2Pro
|Location: ||Ooizumi vil., Yamanashi pref.
|Camera Settings: ||Recording Format...12bit CCD-RAW, converted to 16bit TIFF(3024×2016)|
|CCD Sensitivity...ISO1600, White Balance...Auto|
This image has captured a medium sized galaxy cluster in central Hercules, about 2.5 degrees west from eta Her.
The cluster consists of about 90 member galaxies with a giant elliptic galaxy of NGC6166 as a principal one, and is about 400 millions light years away.
The cluster is one of main parts of Hercules super cluster with the Hercules cluster (Abell 2151).
|Abell 2199 / Galaxy Cluster, type 2 1 I|
|R.A.||16h 28m (rough position)|
|Dec.||+39° 31' (rough position)|
|# of Galaxies||88|
|Distance||395 million light yrs.|
|Supergalactic cluster||Hercules supercluster|