Deep Sky Object in Spring
NGC4731 (Galaxy in Virgo)
|Date & Time: ||Apr 29 2008, from 23:17 to 24:16 JST(+0900)
|Composed 8 shots with 8 minutes exposed|
|Optical: ||Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1760mm, F6.9)
|Auto-guided with Meade LX200 Equatorial & Pictor 201XT
|Digital Camera: ||Nikon D80 (Remodeled)
|Location: ||Ooizumi vil., Yamanashi pref.
|Camera Settings: ||Recording Format...12bit CCD-RAW, converted to 16bit TIFF(3872×2592)|
A unique-shaped dimmed galaxy is NGC4731, belonged to NGC4697 group in southern part of Virgo.
The galaxy has very loosely coiled arms, and a long axis of about 6 arc minutes, fairly larger in galaxies distributed in southern Virgo vicinity.
And the galaxy has a brightness of 12th magnitude but its arms are dimmed, we need larger ranged telescopes to observe its shape with naked eyes.
|NGC4731 / Galaxy, type type SB(s)d pec III|
|R.A.||12h 51m 00.0s (2000.0)|
|Dec.||-06° 23' 34" (2000.0)|
|Distance||75 million light yrs.|
|Group of Galaxies||NGC4697 Group|
|Other IDs||UGCA 302, MCG -1-33-26|
IRAS 12484-607, PGC 43507