Deep Sky Object in Spring
M108 (Galaxy in Ursa Major)
|Date & Time: ||Jan 10 2016, from 23:39 to 24:30 JST(+0900)
|Composed 6 shots with 10 minutes exposed|
|Optical: ||Meade 25cm(10") Schmidt-Cassegrain with a conversion lens (f=1600mm, F6.3)
|with BaaderPlanetarium UV/IR cut filter|
|Auto-guided with Meade LX200 Eqatorial & 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)|
M108 is a faint irregular galaxy about 2 degrees southeast of beta UMa (Merak),
it shows us its edge being on, and you can see a long ellipse via telescopes.
It lookes like a shrinked M82, a irregular and bright galaxy in Ursa Major.
The galaxy M108 has a length of about 8 arc minutes, but faint with a magnitude of 10.7,
it's hard to enjoy the shape unless you have a high magnification and extremely good conditioned night.
|M108 (NGC3556) / Galaxy, type SB(s)cd III-IV|
|R.A.||11h 11m 31.8s (2000.0)|
|Dec.||+55° 40' 15" (2000.0)|
|Distance||23 million light yrs.|
|Group of Galaxies||Ursa Major N Group|
|Other IDs||UGC6225, MCG9-18-98, |
You can find out a famous planetary nebula of M97, Owl Nebula, about 50 arc minutes southeast from M108.
The distance is estimated about 23 million light years.
Jump to Wide field of M97 & M108
||Finding chart of M97 & M108
You can find this pair easily by tracing 2 deg. SE of beta UMa. And they can be caught in same field of portable binoculars.
(Taken with f=200mm telephoto lens)