| Constellation tour in Spring |
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| Date & Time: | Mar 21 2020, from 24:24 to 24:50 JST(+0900) |
| Composed 6 shots with 5 minutes exposed | |
| Optical: | AF zoom-Nikkor 24-85mm (f=50mm, stop: F3.5) |
| 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 |
You can detect a small-distorted square formed from four stars with 3rd magnitudes just above the Hydra that is lying in spring southern skies.
The square represents the constellation of Corvus, the crow. The square is positioned at southwest of Spica, alpha Virginis.
This noticeable asterism has been taken an attention since ancient times, is called "The star of sail" in Japan.
And the square has been called the "Spica's Spanker" in England, because you can find Spica by stretching the northern edge of the square eastward. A Greek myth says that the crow had served Apollo, the crow could talk and had the silvered wings. But he was very clever and told a lie that wife of Apollo had an affair. Apollo got angry and he killed her, but became aware that was his lie. Apollo regretted intensely, and made the crow black and be in mourning for his wife. |
Guide for Deep Sky Objects| NGC4027 | .....Asymmetrical bared galaxy just SW of the Antennae |
| The Antennae NGC4038,4039 | .....Famous colliding pair of galaxies in western Corvus, 63 million ly. away |
| NGC4361 | .....Bright & small planetary nebula in the square of Corvus, 4300 ly, away |
 Hydra |
 Crater |
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Copyright(c) 2020 by Naoyuki Kurita, All rights reserved. |
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