Deep Sky Object in Spring
Around M101 (Pinwheel Galaxy in Ursa Major)


Date & Time: Apr 26 2003, from 23:24 to 23:37 JST(+0900)
Composed 3 shots with 6 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsolon (f=530mm, F3.3)
Auto-guided with TAKAHASHI JP equatorial
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...ISO800, White Balance...Auto


M101 (NGC5457) / Galaxy, type SAB(rs)cd I
R.A.14h 03m 12.7s (2000.0)
Dec.+54° 21' 03" (2000.0)
Apparent Size28.8×26.9'
Radial Velocity+360km/s
Magnitude8.3
Distance22.5 million light yrs.
Group of GalaxiesM101 Group
Other IDsUGC8981, MCG9-23-28,
PGC50063, Arp 26
This picture covers about 2.5 degrees in span around M101. There are several dimmed galaxies distributed around M101, and forming a small-scaled galactic group of "The M101 group". An irregular galaxy in lower of this image has a number of NGC5474.

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M94
NGC5866 (M102)

Copyright(c) 2003 by Naoyuki Kurita, All rights reserved.
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