Deep Sky Object in Autumn
Around IC284 (Galaxies in Perseus)


Date & Time: Oct 22 2022, from 26:26 to 27:22 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


A small group of galaxies hidden 1.5 degrees north of βPersei (Algol). IC284 is the blurred spiral galaxy at the bottom of the image, and IC1186 is visible 30 minutes north of it. These galaxies are located at a distance of 120 million light years and form the same group of galaxies.
A small edge-on galaxy visible 18 minutes west of IC284 is NGC1175. It is located more than twice as far away as the above two galaxies, and is not related to the galaxy group.

IC284 / Galaxy, type SAdm
R.A.03h 06m 09.3s (2000.0)
Dec.+42°22' 20" (2000.0)
Apparent Size4.4×2.0'
Radial Velocity+2706km/s
Magnitude12.5
Distance127 million light yrs.
Group of GalaxiesNGC1186 Group
Other IDsUGC 2531, CGCG 540-37
MCG +7-7-23, IRAS 3029+4211
PGC 11643
NGC1186 / Galaxy, type SB(r)bc:
R.A.03h 05m 31.3s (2000.0)
Dec.+42°50' 09" (2000.0)
Apparent Size3.1×1.1'
Radial Velocity+2658km/s
Magnitude12.2
Distance128 million light yrs.
Group of GalaxiesNGC1186 Group
Other IDsNGC 1174, UGC 2521
CGCG 540-34, MCG +7-7-21
IRAS 3022+4238, PGC 11617
NGC1175 / Galaxy, type SA(r)0+
R.A.03h 04m 32.7s (2000.0)
Dec.+42°20' 22" (2000.0)
Apparent Size2.4×0.8'
Radial Velocity+5540km/s
Magnitude13.9
Distance252 million light yrs.
Group of Galaxies -
Other IDsUGC 2515, CGCG 540-32
MCG +7-7-19, PGC 11578



Around IC196
IC298 (Arp 147)

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