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)|
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.
|NGC3184 / Galaxy, type SAB(rs)cb II-III|
|R.A.||10h 18m 17.2s (2000.0)|
|Dec.||+41° 25' 26" (2000.0)|
|Group of Galaxies||N/A|
|Other IDs||NGC3180, UGC5557|