Deep Sky Object in Spring
NGC3184 (Galaxy in Ursa Major)


Date & Time: Jan 27 2007, from 26:25 to 26:58 JST(+0900)
Composed 4shots with 10 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Nikon D70 (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...12bit CCD-RAW, converted to 16bit TIFF(3008×2000)
CCD Sensitivity...ISO1250




NGC3184 / Galaxy, type SAB(rs)cb II-III
R.A.10h 18m 17.2s (2000.0)
Dec.+41° 25' 26" (2000.0)
Apparent Size7.4×7.0'
Radial VelocityN/A
Magnitude10.5
DistanceN/A
Group of GalaxiesN/A
Other IDsNGC3180, UGC5557
MCG7-21-37, PGC30087
NGC3184 is a dimmed spiral galaxy positioned at only 45 arc minutes west of mu Ursae Majoris that forms the tip of Big Bear's one of hind legs. It's almost on a boundary on Leo Minor. The galaxy has a visual brightness of 10.5, but it looks fainter than this magnitude so it's fairly difficult to distinguish its detailed structure through telescopes. Though this picture is a bit noisy, you can see NGC3184 as a typical face-on galaxy and two arms coiled up loosely. And the galaxy is about 7 arc minutes in diameter.




NGC3079

NGC3198


Copyright(c) 2007 by Naoyuki Kurita, All rights reserved.
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