| Constellation tour in Summer |
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| Date & Time: | May 3 2005, from 22:57 to 23:38 JST(+0900) |
| Mosaic of 2 images with 20 minutes exposed | |
| Optical: | SMC TAKUMAR f=105mm F2.4, Aperture: F4.0, with Cokin Diffuser-1 filter |
| Auto-guided with Kenko SKYMEMO Equatorial | |
| Camera: | PENTAX 67 |
| Film: | Ektachrome E200 (+1EV pushed) |
| Location: | Hitachi-Oota city, Ibaraki pref. |
 ASCII/Astroarts StellaNavigator |
The Hercules is a fairly large constellation in summer, but isn't very obvious.
"Hercules" is a name of Greek hero, and the constellation is represented as a kneeling man with his head turning south. Though the constellation is faint, a fairly strained shape of "H" that forms Hercules' body is a good mark to find that. Alpha Herculis, Ras Algethi, is positioned at the kneeler's head has a magnitude of 3, ancient Chinese had regarded the star as the Emperor's seat, and they had observed this field very carefully whether there was any novae or comets. |
Guide for Deep Sky Objects| M13 | ...One of the finest Globular Clusters in summer skies |
| M92 | ...Medium-sized globular cluster between Hercules's legs, 36 thousand ly. away |
| NGC6210 | ...Small and elliptic planetary nebula 4deg. NE of beta Her. |
| Hercules Cluster(Abell 2151) | ...A galactic cluster positioned around a border to Serpent Caput, 460 million ly away |
| Abell 2199 | ...A galactic cluster with NGC6166 as a central galaxy, 395 million ly away |
 Aquila |
 Serpens & Ophiuchus |
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Copyright(c) 2005 by Naoyuki Kurita, All rights reserved. |
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