Deep Sky Object in Spring
NGC5466 (Globular Cluster in Bootes)

Date & Time: Apr 29 2009, from 22:19 to 22:45 JST(+0900)
Composed 4 shots with 8 minutes exposed
Optical: VIXEN 20cm(7.9") VISAC with a conversion lens (f=1278mm, F6.4)
with BaaderPlanetarium Moon & Skyglow filter
Auto-guided with TAKAHASHI JP Equatorial & Meade Pictor 201XT
Digital Camera: Nikon D50 (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...12bit CCD-RAW, converted to 8bit TIFF(3008×2000)
CCD Sensitivity...ISO1600

NGC5466 / Globular Cluster, type XII
R.A.14h 05m 30.0s (2000.0)
Dec.+28° 32' 00" (2000.0)
Apparent Size5.0'
Real Size81 light yrs.
Distance47 thousand light yrs.
NGC5466 is a very dimmed globular cluster in west region of Bootes. It's difficult to catch the globular cluster with finder scopes, you can use a way of searching that firstly find out a bright globular cluster of M3 in Canes Venatici, and next tracing about 5 degrees east from M3. NGC5466 has a visual magnitude of 10, you might need over 4 inch telescopes to detect it clearly. The globular has fairly sparse stellar density; long exposed films can easily resolve member stars around central region. This star field is very far from the Milky Way, and a distance of the globular is estimated about 47 thousand light years. The globular cluster is positioned apart from the galactic disk, to say, lying at a remote region of the Galaxy.

Omega Cluster(NGC5139)


Copyright(c) 2009 by Naoyuki Kurita, All rights reserved.
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