Deep Sky Object in Spring
M98 (Galaxy in Coma Berenices)

Date & Time: Jan 24 2009, from 25:45 to 26:16 JST(+0900)
Composed 4 shots with 10 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: Nikon D50 (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...12bit CCD-RAW, converted to 16bit TIFF(3008×2000)
CCD Sensitivity...ISO1600

M98 (NGC4192) / Galaxy, type SAB(s)ab II
R.A.12h 13m 48.2s (2000.0)
Dec.+14° 53' 43" (2000.0)
Apparent Size8.4×1.9'
Radial Velocity+184km/s
Distance36 million light yrs.
Group of GalaxiesVirgo Cluster
Other IDsUGC7231, MCG3-31-79,
M98 is one of uncountable galaxies in the Virgo Cluster spread out high up in the spring sky, the galaxy lies around western edge of the Cluster. The galaxy can be found about 6 degrees east of Denebola, beta Leonis. Though it has a sufficient length of 10 arc minutes for small scopes, fairly fine object about 10th magnitude. You ought to search the galaxy with telescopes very carefully.
It's considered that M98 is a spiral galaxy and we see it being edge on, and it has fairly complicated structure. The galaxy has an impression of the shrinked M81, very noticeable edge-on galaxy in Ursa Major. M98 is lying around close-side to us in the Virgo Cluster, about 36 million light years away.

Around M95, M96


Copyright(c) 2009 by Naoyuki Kurita, All rights reserved.
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