Deep Sky Object in Spring
Around M105 (Galaxy in Leo)

Date & Time: Nov 22 2003, from 27:27 to 27:46 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

M105 (NGC3379) / Galaxy, type E1
R.A.10h 47m 49.8s (2000.0)
Dec.+12° 34' 57" (2000.0)
Apparent Size5.3×4.7'
Radial Velocity+1217km/s
Distance36 million light yrs.
Group of GalaxiesLeo I Group
Other IDsUGC5902, MCG2-28-11
M105 is an elliptical galaxy around the center of Leo. The galaxy is lying about a degree north of M95 and M96, those three Messier's galaxies can be appreciated in low powered field of view. The galaxy is one of principal members of a small galactic cluster formed by some dimmed galaxies around this field. M105 lies at right of three triangled galaxies, and other two galaxies are named NGC3384 (upper) and NGC3389 (left), respectively.
M105 has a diameter of about 5 arc minutes and visual magnitude of 10. It's a round shaped elliptical so you cannot resolve clear structures.

M104(Sombrero Nebula)


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