Constellation tour in Spring
Hydra


Date & Time: (head) Feb 4 2006, 26:48 JST(+0900), 15min. Exp.
(tail) Feb 4 2006, 27:05 JST(+0900), 15min. Exp.
Optical: AF zoom-Nikkor 24-85mm (f=24mm, 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
The Hydra is the largest constellation in the heavens. It occupies the southern sky in spring bordering Cancer, to as far as Libra and Centaurus, stretching out to around one hundred degrees in the process.
This hydra marks a gigantic beast with many heads. And Heracles killed the hydra by cutting off the all of head.
Alpha Hydrae, Alphard is very noticeable at the heart of hydra. The star is a bright red-giant, meaning of "Solitary". It came that there are no bright stars around Alphard. Besides, The star has an another name of "Col Hydrae" (The Hydra's Heart), a fitting name.





Guide for Deep Sky Objects

M48 .....Open cluster at the west-edge of Hydra, 3000 ly. away
M68 .....Globular cluster south of the square of Corvus, 37 thousand ly. away
M83 .....Bright Galaxy around the tail of Hydra, 15 million ly. away
NGC2784 .....Lenticular galaxy near the boundary on Pyxis
NGC2835 .....Medium sized spiral galaxy near the boundary on Pyxis
NGC2992, NGC2993 .....Unique-shaped closing galactic pair 7deg. SE from Alphard
NGC3109 .....Large-sized spiral galaxy near a boundary on Antlia
NGC3200 .....Small galaxy at 2deg. SW of mu Hya.
Jupiter Nebula .....Planetary Nebula resembles with a planet of Jupiter in central region of Hydra
Hydra I Cluster .....A galaxy cluster in center of Hya consists of 50 members, 150 million ly away
NGC3585 .....Medium-sized lenticular galaxy at 4deg. south of beta Crt.
NGC3621 .....Large & dimmed spiral galaxy in central region.
NGC3717 .....Medium-scaled edge-on galaxy 1.5deg. north of xi Hya, 92 millions ly away
NGC3923 .....A peculiar shaped Lenticular in central region, 85 million ly away
NGC5078, NGC5101 .....Bared & edge-on galaxies paralleling at the tail
NGC5694 .....Small globular cluster in eastern edge, 105 thousand ly away
IC4351 .....Small edge-on galaxy in eastern edge region
HCG40 .....Small-scaled compact group near border to Sextans.
ESO510-13 .....Small edge-on galaxy lying in eastern region
PK238+34.1 .....A dimmed round planetary with 4' in diameter in west region





Cancer

Corvus


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