Constellation tour in Summer
Hercules

Click on image to enlarge

Date & Time: Mar 20 2020, from 25:58 to 26:23 JST(+0900)
Composed 6 shots with 5 minutes exposed
Optical: AF zoom-Nikkor 24-85mm (f=24mm, 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 		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.
Around NGC6269 ...Small galaxy group at 4.8deg. south of εHer, 470 million ly away
Abell 2147, 2152 ...Two galaxy clusters paralleled with a deg.-interval positioned on a boundary to Serpens Caput
Hercules Cluster(Abell 2151) ...A galactic cluster positioned around a border to Serpent Caput, 460 million ly away
Abell 2197 ...A galactic cluster with NGC6160 & 6173 as central galaxies, 420 million ly away
Abell 2199 ...A galactic cluster with NGC6166 as a central galaxy, 395 million ly away
Sh2-73 ...Dimmed molecular cloud distributed at 4.5deg. west of βHer, on a boundary on Serpens Caput
Arp 102 ...Interacting galaxy pair at 4.6deg. NW of ι Her, 310 million ly away
Abell 39 ...3'-diameter spherical shaped planetary nebula at 4.7deg. SW of ζ Her



Aquila
Serpens & Ophiuchus

Copyright(c) 2020 by Naoyuki Kurita, All rights reserved.
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