Constellation tour in Summer
Libra (The Balance)

Date & Time: Feb 4 2006, 19:49 JST(+0900), 20min. Exp.
Optical: AF zoom-Nikkor 24-85mm (f=50mm, Aperture: F4.0), with Cokin Diffuser-1 filter
Auto-guided with TAKAHASHI JP Equatorial
Camera: Koheisha Astrocamera S + Horseman 6x7 Roll film adaptor
Film: Ektachrome E200 (+1EV pushed)
Location: Ooizumi, Hokuto city, Yamanashi pref.

ASCII/Astroarts StellaNavigator
Libra, the Balance is a member of zodiac next to Virgo. Three stars with the third magnitudes characterize the constellation. It's fairly dim, and was a part of Scorpius in antiquity.
About over two thousand years ago, the sun passed through Libra at the autumnal equinox when day and night were of equal length, and the day would begin to shorten from that day on. It's considered that the constellation of Libra was invented to symbolize the equinox that divides day and night equally. Now, the autumnal equinox has moved to Virgo because of the precession of Earth.

Guide for Deep Sky Objects

NGC5897 .....Sparse globular cluster in the square of Libra, 45 thousand ly. away
Arp 254 .....Small scaled interacting galaxy pair in 2deg. NNE of beta Lib.



Copyright(c) 2006 by Naoyuki Kurita, All rights reserved.
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