Deep Sky Object in Autumn
Abell 168 (Galaxy Cluster in Cetus)


Date & Time: Oct 22 2022, from 25:15 to 26:11 JST(+0900)
Composed 8 shots with 8 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with IDAS LPS-P1 Light-pollution suppression filter
Auto-guided with Meade LX200 Equatorial & Lacerta M-GEN
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 168 / Galaxy Cluster, type 2 3 II-III
R.A.01h 15m 12.0s (2000.0)
Dec.+00° 14' 00" (2000.0)
Apparent Size39.2'
# of Galaxies89
Red Shift0.0438
Magnitude15.4
Distance600 million light yrs.
Supergalactic clusterPisces-Cetus supercluster
This picture has captured a galaxy cluster around center of the Cetus, near a boundary on the Pisces. The cluster has about 90 galaxies distributed in a span of 40 arc minutes, Abell 168 contains the most galaxies in the "Pisces-Cetus super galaxy cluster" spread around 600 millions light years away. But the gigantic galactic group is lying extraordinary far away, almost all galaxies looks only lump of light with 16th or 17th magnitude in brightness.



Abell 151
Abell 194

Copyright(c) 2022 by Naoyuki Kurita, All rights reserved.
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