| Constellation tour in Summer |
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| Date & Time: | Mar 20 2020, from 26:39 to 27:04 JST(+0900) |
| Composed 6 shots with 5 minutes exposed | |
| Optical: | AF zoom-Nikkor 24-85mm (f=35mm, stop: F4.0) |
| with IDAS LPS-P2-FF Light-pollution suppression & Kenko PRO Softon[A] filters | |
| Auto-guided with TAKAHASHI EM-200 Equatorial | |
| Digital Camera: | Canon EOS 600D (Remodeled) |
| Location: | Ooizumi, Hokuto city, Yamanashi pref. |
| Camera Settings: | Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456) |
| Sensitivity...ISO800 |
 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| NGC5792 | .....Barred galaxy in northern edge, 83 million ly away |
| 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. |
 Scutum |
 Delphinus |
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Copyright(c) 2020 by Naoyuki Kurita, All rights reserved. |
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