Deep Sky Object in Spring
NGC4818 (Galaxy in Virgo)

Date & Time: Dec 24 2011, from 28:29 to 29:00 JST(+0900)
Composed 6 shots with 6 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1790mm, F7.1)
with BaaderPlanetarium Moon & Skyglow filter
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Nikon D700
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(2784×1848)
Device Size...DX Format (24×16mm)
CCD Sensitivity...ISO3200

NGC4818 / Galaxy, type SAB(rs)ab pec:
R.A.12h 56m 48.9s (2000.0)
Dec.-08°31' 32" (2000.0)
Apparent Size5.1×1.5'
Radial Velocity+1075km/s
Distance75 million light yrs.
Group of GalaxiesNGC4697 Group
Other IDsMCG -1-33-57, IRAS 12542-815
PGC 44191
NGC4818 is a medium sized barred galaxy lying in south of the Virgo Cluster. The galaxy has a long axis of about 5 arc minutes and a visual brightness of 12th magnitude. Although this image cannot detect structures of arms, you can appreciate a barred structures surrounding central bulge.

NGC4754, NGC4762


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