Abell 1185 (Galaxy Cluster in Ursa Major)
|Deep Sky Object in Spring
|Date & Time: ||Jan 24 2009, from 25:00 to 25:31 JST(+0900)
|Composed 4 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: ||Nikon D50 (Remodeled)
|Location: ||Ooizumi, Hokuto city, Yamanashi pref.
|Camera Settings: ||Recording Format...12bit CCD-RAW, converted to 16bit TIFF(3008×2000)|
Abell 1185 is a small-scaled galaxy cluster positioned at a boundary between Ursa Major and Leo.
The cluster is about 430 millions light years away, contains about 50 member galaxies in 30 arc minutes in apparent diameter.
Members with NGC numbers are about 14th magnitude or so in brightness.
|Abell 1185 / Galaxy Cluster, type 1 2 II|
|R.A.||11h 10m 48.0s|
|Dec.||+28° 40' 00"|
|# of Galaxies||52|
|Distance||430 million light yrs.|
|Galactic supercluster||Leo supercluster|
You can see a galaxy pair of NGC3561 and 3561A in northeast edge of the cluster, the pair has been warped by their interaction.
A tail-like structure is stretched in northern direction from NGC3561A.
We have a number of Arp105 of peculiar galaxies in this minor galaxy pair.
Numbers with 4 digits represent NGC #