Small Magellanic
Cloud
Large Magellanic Cloud
HYDRUS
OCTANS
MENSA
VOLANS
CARINA
CENTAURUS
CRUX
CHAMAELEON
MUSCA
DORADO
α
γ
β
δ
β
γ
1
γ
2
γ
3
υ
τ
σ
χ
8
0°
70°
Small Magellanic
Cloud
Large Magellanic Cloud
8
0°
70°
1
1
2
3
I
南半球での極軸合わせについて事前に八分儀座を調べることを推奨します。
USING THE POLARIE
Octans is a constellation located near the south celestial pole and it can be used to align the Polarie in the southern hemisphere. Unlike Polaris
which is a bright 2nd magnitude star adjacent to the north celestial pole, Octans is made up of dark stars about 5th magnitude on average.
The nearest star to the south celestial pole is Sigma Octantis, which is one of four stars forming a trapezoid in Octans, visible at 5.5th magnitude.
There are a few methods to locate the inconspicuous Octans using the surrounding stars.
Note: Depending on
the season of year,
the orientation of the
Octans changes.
Using the Polarie in the Southern Hemisphere
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