Deep Sky Object in Spring
NGC3109 (Galaxy in Hydra)

Date & Time: Jan 22 2010, from 24:31 to 25:02 JST(+0900)
Composed 6 shots with 6 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

NGC3109 / Galaxy, type SB(s)m sp
R.A.10h 03m 06.3s (2000.0)
Dec.-26° 09' 26" (2000.0)
Apparent Size21.0×3.7'
Radial Velocity+408km/s
Distance4.1 million light yrs.
Group of GalaxiesLocal Group
Other IDsUGCA 194, ESO 499-36
MCG -4-24-13, DDO 236
PGC 29128
NGC3109 is a fairly large sized barred galaxy positioned in central region of Hydra, near a boundary on Antlia. The galaxy has an elliptical shape with its long axis of larger than 20 arc minutes in east west direction, we can recognize a shape like an irregular galaxy in this picture. NGC3109 has a visual brightness of about 10th magnitude but it's difficult to observe under good conditioned night because of lower meridian latitude at northern hemisphere. The galaxy is lying at about 4.1 millions light years away, belonging to the Local Group with our Milky Way Galaxy.


Spindle Galaxy(NGC3115)

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