Deep Sky Object in Spring
M53 (Globular Cluster in Coma Berenices)

Date & Time: Jan 31 2004, from 26:25 to 26:35 JST(+0900)
Composed 3 shots with 4 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

M53 (NGC5024) / Globular Cluster, type V
R.A.13h 12m 54.0s (2000.0)
Dec.+18° 10' 00" (2000.0)
Apparent Size10.0'
Real Size55 light yrs.
Distance65,000 light yrs.
M53 (NGC5023) is a small-sized globular cluster positioned just east of Virgo Cluster that contains uncountable galaxies. The cluster should be easily found at one-degree northeast of alpha Comae. M53 has a diameter of about 10 arc minutes and a magnitude of 7.6, the distance from the solar system is estimated about 65 thousand light years.
The globular has a very densed nucleus, this picture shows over-exposured. It tends to be impressive with larger scopes, which are needed to resolve the individual members.
M53 is one of few globular clusters visible in the spring skies; you can find a fairly vast globular cluster of M3 just northeast region of Canes Venatici.



Copyright(c) 2004 by Naoyuki Kurita, All rights reserved.
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