Deep Sky Object in Spring
M106 (Galaxy in Canes Venatici)
|Date & Time: ||Feb 18 2012, from 23:51 to 24:23 JST(+0900)
|Composed 6 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 & Pictor 201XT
|Digital Camera: ||Canon EOS 550D (Remodeled)
|Location: ||Ooizumi, Hokuto city, Yamanashi pref.
|Camera Settings: ||Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)|
M106 (NGC4258) is a spiral galaxy about 7.5 degree south-east of gamma UMa.
Although this galaxy is in Canes Venatici, it's easy to search that from the Big Dipper.
|M106 (NGC4258) / Galaxy, type SAB(s)bc II-III|
|R.A.||12h 18m 57.8s (2000.0)|
|Dec.||+47° 18' 16" (2000.0)|
|Distance||21 million light yrs.|
|Group of Galaxies||Canes II Group|
|Other IDs||UGC7353, MCG8-22-104, |
In spring skies, you can find plenty of galaxies, M106 is fairly bright and easy to appreciate in them.
The galaxy has visual magnitude of 8.6 and a size of 20 arc minutes, and you can see that the galaxy is stretching north-south direction through a medium-sized telescope.
The distance of M106 is estimated about 21 million light years.
||Finding chart of M106
M106 is rather apart from gamma UMa, you can find it easier by tracing eastward from kai UMa just south of gamma UMa.
(Taken with f=100mm telephoto lens)