AST-036beginner

Altitude, Azimuth & the Local Horizon: Foundations

Altitude and azimuth form a local coordinate system that describes where an object appears in an observer's sky at a particular place and time. Alt-azimuth coordinates are intuitive for observing and are used by many telescope mounts, radar systems, planetarium software, and horizon-based planning tools.

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Altitude, Azimuth & the Local Horizon: Foundations

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AST-035Daily & Seasonal Sky Motion: Advanced Connections→

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AST-037Altitude, Azimuth & the Local Horizon: Structures & Vocabulary→

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Altitude and azimuth form a local coordinate system that describes where an object appears in an observer's sky at a particular place and time.

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As Earth rotates, a fixed star's right ascension and declination remain nearly constant over a night, but its altitude and azimuth change continuously.

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