Deep Sky Object in Summer
Arp 330 (Galaxy chain in Draco)

Date & Time: Jan 23 2010, from 28:29 to 29:30 JST(+0900)
Composed 6 shots with 12 minutes exposed
Optical: Meade 25cm(10") Schmidt Cassegrain with a conversion lens (f=1760mm, F7.1)
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Nikon D50 (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...12bit CCD-RAW, converted to 16bit TIFF(3008×2000)
CCD Sensitivity...ISO1600

Arp330 / Galaxy, type E1:
R.A.16h 49m 11.5s (2000.0)
Dec.+53° 25' 10" (2000.0)
Apparent Size0.3×0.3'
Radial Velocity+8732km/s
Group of Galaxies -
Other IDsCGCG 276-45, CGCG 277-2
MCG +9-27-94, PGC 59049
This image shows you a deep sky object bathed around 6 degrees west from beta Draconis, forming a head of Draco. Arp330 has 5 or 6 tiny galaxies with 15th to 18th magnitude brightness paralleling like a chain. Of course this object is out of list for observing with amateur telescopes. The brightest galaxy in center of MCG +9-27-94 has a visual brightness of at most 15th magnitude and only 0.3 arc minutes in diameter. Member galaxies of Arp330 have gravitational interactions each other, considered that they're forming a small scaled galaxy group.

Member galaxies in Arp330 Member galaxies in Arp330

Arp 254

Hoag's Object

Copyright(c) 2010 by Naoyuki Kurita, All rights reserved.
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