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3 Cards in this Set

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  • Back
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Celestial Horizon

the intersection of the observer’s horizon/horizontal plane and the celestial sphere

CH

Celestial Meridian / Observer’s Celestial Meridian

the great circle passing through the zenith, nadir and the poles

CM/OCM

Vertical Circles

great circles of the celestial sphere that passes through the zenith and the nadir

VC