Deep Sky Object in Spring
M64 (Black-eye Galaxy in Coma Berenices)


Date & Time: Feb 18 2012, from 28:10 to 28:41 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)
CCD Sensitivity...ISO3200




M64 (NGC4826) / Galaxy, type (R)SA(rs)ab II-III
R.A.12h 56m 44.3s (2000.0)
Dec.+21° 41' 05" (2000.0)
Apparent Size10.0×5.4'
Radial Velocity+403km/s
Magnitude8.8
Distance13.4 million light yrs.
Group of Galaxies-
Other IDsUGC8062, MCG4-31-1,
PGC44182
M64 (NGC4826) is a bright Messier's galaxy in the constellation of Coma Berenices, is positioned around the center of a huge triangle formed by Denebora (beta Leonis), Arcturus (alpha Bootis), and Cor Caroli (alpha CVn).
The galaxy has a size of 10 by 5 arc minutes, can be detected easily by binoculars. And it's the most characteristic feature that the galaxy has the extremely noticeable dark lane at the central region. This dark cloud has given a nickname of "The Black-eye Galaxy". However you might need medium-ranged telescopes to see the "black-eye" with naked-eyes.
M64 has a real diameter of about 160 thousand light years, it's fairly larger than that of our Galaxy. And a distance is estimated about 13 million light years from us.




M63(Sunflower Galaxy)

M81, M82


Copyright(c) 2012 by Naoyuki Kurita, All rights reserved.
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