Oct - Octans the Octant
- IAU Constellation67 of 88Astronomical Regions
Cha - Chamaeleon
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79 of 88Astronomical RegionsHyi - Hydrus the Southern Water Snake
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61 of 88Astronomical RegionsIntro and Visual description
Hydrus has only three stars above the fourth magnitude.Hydrus is the Little Snake, not to be confused with Hydra, the big one.
Ind - Indus the American Indian
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49 of 88Astronomical RegionsIntro and Visual description
Very dim.
Men - Mensa the Mesa or Table Mountain
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75 of 88Astronomical RegionsOct - Octans the Octant
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50 of 88Astronomical RegionsIntro and Visual description
Octans the Octant is devoid of bright stars, but three faint stars (not numbered by brightness) make a small triangle.
The south celestial pole actually lies within Octans. No RA (visible anytime).
The nearest easy-to-spot star to the south pole is Beta-Hydri in Hydrus the Little Snake. No brighter star than Achernar (alpha-Eridani) is closer to the south celestial pole, which lies midway between Achernar (Eridanus) and Crux.
Pav - Pavo the Peacock
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44 of 88Astronomical RegionsTuc - Tucana the Toucan
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48 of 88Astronomical RegionsBode (1801), Plate 1: Aries Planisphere
Image
Uranographia Tab I. Stellatum Hemisphaeri um Arietis.
Bode included two planisphere plates. They are not southern and northern hemispheres; each one has Polaris at the top and the south pole at the bottom. Each one is centered upon an equinox point (where the ecliptic or path of the Sun and the celestial equator intersect). The March equinox point was in Aries in antiquity; by Bode’s time, due to the precession of the equinoxes, it had shifted to Pisces. The September equinox point was in Libra in antiquity; by Bode’s time it had shifted to Virgo. Bode titled the plates as the Aries and Libra planispheres.
The Aries planisphere, centered on the March equinox in Pisces, includes these constellations, among others, which appear high overhead in the night skies of autumn:
Equatorial: Orion, Taurus, Harpa Georgii, Cetus, Aries, Pisces, Pegasus, Aquarius, Aquila, Scutum.
Northern: Auriga, Perseus, Andromeda, Cassiopeia, Draco, Honores Frederici, Cepheus, Cygnus, Lyra.
Southern: Eridanus, Apparatus Chemicus, Machina Electrica, Apparatus Sculptoris, Horologium, Toucan, Phoenix, Grus, Indus, Pavo, Tubus Astronomicus, Octans Nautica, Microscopium, Sagittarius, Globus Aerostatic.
In March, the Aries-Pisces equinox (the center of the Aries planisphere) is traveling with the Sun, rising in the east in the mornings and setting in the west in the evenings. Imagine the center of the planisphere has the Sun pinned to it for that day, and that’s how it would move across the sky. Therefore the constellations near the center of this planisphere are invisible in the daytime sky at that time unless there is a solar eclipse. They would be visible directly opposite the Sun at the September equinox.
IAU Constellation Main Page
Tau - Taurus the Bull
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Intro and Visual description
Taurus the Bull is easily spotted. Its head is the Hyades, a V-shaped cluster of stars. His horns point outward from the V. Aldebaran is the red eye of the Bull as he charges down upon us.