Deep Sky Object in Winter
NGC1808 (Galaxy in Columba)

Date & Time: Nov 28 2008, from 26:14 to 26:39 JST(+0900)
Composed 4 shots with 8 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with 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

NGC1808 / Galaxy, type (R)SAB(s)a pec:
R.A.05h 07m 42.8s (2000.0)
Dec.-37° 30' 51" (2000.0)
Apparent Size6.7×4.9'
Radial Velocity+1014km/s
Distance35 million light yrs.
Group of GalaxiesNGC1792 Group
Other IDsESO 305-8, MCG -6-12-5
IRAS 5059-3734, PGC 16779
NGC1808 is a medium sized galaxy in western edge of Columba, has a long axis of a bit shorter than 7 arc minutes and a brightness of 10.7th magnitude. This image shows you indistinct arms stretched in NW-SE direction. The galaxy is about 35 millions light years away.



Copyright(c) 2009 by Naoyuki Kurita, All rights reserved.
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