Deep Sky Object in Spring
NGC3631 (Galaxy in Ursa Major)
|Date & Time: ||Jan 12 2013, from 25:32 to 26:12 JST(+0900)
|Composed 6 shots with 8 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: ||Canon EOS 600D (Remodeled)
|Location: ||Ooizumi, Hokuto city, Yamanashi pref.
|Camera Settings: ||Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)|
NGC3631 is a medium sized face-on galaxy in central region of Ursa Major.
We can find the galaxy out at about 5 degrees west from gamma UMa, a star that marks one of the cup of Big Dipper.
The galaxy has a visual diameter of 5 arc minutes and a brightness of about 11th magnitude.
Although you can detect the galaxy as only lump of light with telescope aided eyes, this image shows us the galaxy has clear spiral structures.
|NGC3631 / Galaxy, type SA(s)c I-II|
|R.A.||11h 21m 02.9s (2000.0)|
|Dec.||+53°10' 10" (2000.0)|
|Distance||70 million light yrs.|
|Group of Galaxies||Ursa Major N Group|
|Other IDs||UGC 6360, CGCG 268-21|
Arp 27, MCG +9-19-47
IRAS 11181+5326, PGC 34767