Deep Sky Object in Autumn
Abell 347 (Galaxy Cluster in Andromeda)

Date & Time: Sep 20 2014, from 26:01 to 26:38 JST(+0900)
Composed 7 shots with 6 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with a conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Canon EOS 600D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)

Abell 347 / Galaxy Cluster, type 0 1 II-III
R.A.02h 25m 48.0s (2000.0)
Dec.+41°52' 00" (2000.0)
Apparent Size56'
# of Galaxies32
Red Shift0.0172
Distance240 million light yrs.
Galactic superclusterPerseus-Pisces supercluster
Around the eastern edge of Andromeda, this image has captured an indistinct galaxy cluster positioned at about 4 degrees east of gamma Andromedae. A well-proportioned edge-on galaxy of NGC891 can be detected just upper-left (northwest) out of this field of view.
Abell347 includes about 30 member galaxies, one of principal cluster forming the "Perseus-Pisces super galaxy cluster". The supercluster includes the most striking "Perseus I cluster (Abell 426)" positioned at about 10 degrees east from this field. They has only dimmed galaxies but we can observe them around the zenith in autumn and winter skies, it can be said that they're easy-to-capture galaxy clusters at the northern hemisphere. The brightest galaxy in Abell347 is NGC910 with a brightness of about 12th magnitude and a size of about 1.4 arc minutes. It has been estimated that the galaxy cluster is about 240 million light years away.

Numbers with 4 digits represent NGC #

Abell 262

Perseus I Cluster

Copyright(c) 2014 by Naoyuki Kurita, All rights reserved.
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