Deep Sky Object in Winter
M45 (The Pleiades in Taurus)

Date & Time: Jan 12 2013, from 21:48 to 22:51 JST(+0900)
Mosaic of 2 flames of 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)

-->Jump to rendezvous of M45 with the Mars
-->Jump to rendezvous of M45 with the Venus
-->Jump to Great appraoch of M45 with the Venus (Apr 4, 2004)

M45 (Mel.22) / Open Cluster, type c, I 3 r n
R.A.03h 47m 0.0s (2000.0)
Dec.+24° 07' 00" (2000.0)
Apparent Size100'
Real Size27 light yrs.
# of Stars100
Distance410 light yrs.
M45, The Pleiades is the most popular Open Cluster seen in the constellation of Taurus. We can see bright six or seven stars with naked eyes, and these seven go under the name "The Seven Sisters".
The Pleiades is one of the closest star clusters with 410 light-years away, we can detect as a size of about 2 degrees. It has a huge size, so binoculars are suitable for appreciating this attractive object rather than telescopes.
This cluster is visible easily, so it has various names from ancient times. For example, the cluster is called "Subaru" in Japan meaning of "bind" or "tie", this name can be found out in a Japanese ancient literary work, "Makurano-Soushi" in 10th century.


M46, M47

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