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



Date & Time: May 4 2019, from 20:00 to 20:55 JST(+0900)
Composed 9 shots with 6 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with Meade LX200 Equatorial & Lacerta M-GEN
Digital Camera: Canon EOS 6D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(3056×3056)
Device Size...20×20mm, Sensitivity...ISO4000



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) 2019 by Naoyuki Kurita, All rights reserved.
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