Deep Sky Object in Spring
M94(Galaxy in Canes Venatici)

Date & Time: Dec 27 2003, from 27:22 to 27:43 JST(+0900)
Composed 3 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: Fujifilm FinePix S2 Pro
Location: Ooizumi vil., Yamanashi pref.

Camera Settings: Recording Format...12bit CCD-RAW, converted to 16bit TIFF(3024×2016)
CCD Sensitivity...ISO1600, White Balance...Auto

M94 (NGC4736) / Galaxy, type (R)SA(r)ab II
R.A.12h 50m 53.6s (2000.0)
Dec.+41° 07' 10" (2000.0)
Apparent Size11.2×9.1'
Radial Velocity+360km/s
Distance14 million light yrs.
Group of GalaxiesCanes I Group
Other IDsUGC7996, MCG7-26-58,
M94 (NGC4736) is a large galaxy positioned around the center of Canes Venatici. The galaxy is found to draw a line between Cor Caroli and beta CVn, and at the halfway point draw a perpendicular off to the northeast. M94 is a circular galaxy with about 10 arc minutes diameter and 9th magnitude, it might be easily detected only with small binoculars as a blurred star-like image. The galaxy is conspicuous that has a very bright nucleus, you may miss M94 in not so clear sky because it looks like a normal star.
This image shows the galaxy is face-on, and very dimmed beam of light spreading around the nucleus.
The galaxy lies on about 14 million light years away, and has a span of about 140 thousand light years.

M81, M82

M101(Pinwheel Nebula)

Copyright(c) 2004 by Naoyuki Kurita, All rights reserved.
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