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

Date & Time: Mar 16 2018, from 26:00 to 26:57 JST(+0900)
Composed 12 shots with 5 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: Nikon D810A
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(2000×2000)
Device Size...10×10mm
Sensitivity...ISO4000, White Balance...Daylight

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
Distance13.4 million light yrs.
Group of Galaxies-
Other IDsUGC8062, MCG4-31-1,
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) 2018 by Naoyuki Kurita, All rights reserved.
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