Deep Sky Object in Summer
The Corona Cluster (Abell 2065)


Date & Time: Mar 16 2018, from 27:09 to 28:05 JST(+0900)
Composed 12 shots with 5 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Nikon D810A
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(4080×4080)
Device Size...20×20mm
Sensitivity...ISO4000, White Balance...Daylight


Abell 2065 / Galaxy Cluster, type 2 3 III
R.A.15h 23m (rough position)
Dec.+27° 43' (rough position)
Apparent Size22.4'
# of Galaxies109
Red Shift0.0721
Magnitude15.6
Distance860 million light yrs.
Supergalactic ClusterCorona Supergalactic cluster
It's a very deep sky object of galactic cluster hidden in western Corona Borealis. Several indistinct light spots in center of this picture are individual member galaxies. It's recognized about 100 galaxies are included in span of 10 arc minutes. The cluster is about 860 million light years away and has a visual brightness of 15th magnitude.
By clicking on the button in the upper right corner of the page, you can switch to an image that has removed stars within the Milky Way galaxy. All light spots in the image are galaxies belonged to the Coma Cluster. An angular scale of 5 arc minutes is equivalent to about 1.25 millions light years in real length.



Abell2061
Abell 2147 & Abell 2152

Copyright(c) 2018 by Naoyuki Kurita, All rights reserved.
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