Deep Sky Object in Winter
M50 (Open Cluster in Monoceros)


Date & Time: Jan 12 2013, from 26:01 to 26:25 JST(+0900)
Composed 4shots with 8 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with Astronomik CLS-CCD filter
Auto-guided with TAKAHASHI JP Equatorial &SBIG STV
Digital Camera: Canon EOS 550D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)
Sensitivity...ISO1600


M50 (NGC2323) / Open Cluster, type e, II 3 r
R.A.07h 03m 12.0s (2000.0)
Dec.-08° 20' 00" (2000.0)
Apparent Size16'
Real Size12 light yrs.
# of Stars80
Magnitude6.9
Distance2600 light yrs.
M50 (NGC2323) is the only Messier object in this constellation, an open cluster with a size of about 16 arc minutes. You'll find out the cluster near the boundary to Canis Major. Sirius (alpha CMa) is a good mark to search that, about 9 degrees NE of the brightest star in the sky. The cluster contains approximately 80 fine stars, and a nebula-like view will be appreciated through binoculars. Distance is estimated about 2600 light years.

→Wide-field around M50



M46,M47
M93

Copyright(c) 2013 by Naoyuki Kurita, All rights reserved.
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