Deep Sky Object in Spring
M63 (Sunflower Galaxy in Canes Venatici)

Date & Time: Feb 18 2012, from 27:27 to 27:57 JST(+0900)
Composed 4 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

M63 (NGC5055) / Galaxy, type SA(rs)bc II-III
R.A.13h 15m 49.3s (2000.0)
Dec.+42° 02' 06" (2000.0)
Apparent Size12.6×7.2'
Radial Velocity+571km/s
Distance23.8 million light yrs.
Group of GalaxiesNGC5194 Group
Other IDsUGC8334, MCG7-27-54,
M63 (NGC5055) is a bright spiral galaxy about five degrees north-east of Col Caroli, alpha Canum Venaticorum, and the position is almost equivalent to the midway between Col Caroli and another noticeable galaxy of M51, Whirlpool Nebula. This spiral is sometimes called the Sunflower Galaxy by its numerous arms, and has the apparent diameter of about 10 arc minutes, one of the largest galaxies scattered around this field.
You can appreciate the galaxy as a dimmed ellipse with its tips being sharp through scopes. The galaxy is about 24 million light years away.

M51(Whirlpool Galaxy)

M64(Black-eye Galaxy)

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