Deep Sky Object in Autumn
Abell 397 (Galaxy Cluster in Aries)


Date & Time: Dec 10 2020, from 18:19 to 19:27 JST(+0900)
Composed 12 shots with 6 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 & 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 397 / Galaxy Cluster, type 0 3 III
R.A.02h 57m 00.0s (2000.0)
Dec.+15°57' 00" (2000.0)
Apparent Size50.4'
# of galaxies35
Red ShiftN/A
Magnitude15.1
DistanceN/A
Galactic supercluster -
Abell 397 is a small-scaled galaxy cluster positioned at 5.2 degrees southwest of delta Arietis, an east end star of the constellation. The cluster has a span of 50arc minutes and contains about 35 member galaxies. No members with NGC numbers are contained, the brightest one has a visual brightness of only 15th magnitude.



Abell 347 & NGC891
Abell 400

Copyright(c) 2020 by Naoyuki Kurita, All rights reserved.
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