The Celestial Sphere

Highlights

• ›The imaginary sphere onto which the sky is projected

Related systems & concepts

• The Equatorial Coordinate System
• The Horizontal Coordinate System

Across the reference systems

• The Horizontal Coordinate System
• Atmospheric Refraction

Knowledge connections

• Associated withThe Equatorial Coordinate System
• Associated withThe Horizontal Coordinate System
• Associated withThe Horizontal Coordinate System
• Associated withAtmospheric Refraction

Sources

Facts on this topic will be cited from these primary and reference sources.

• IAUInternational Astronomical Union

  Official naming, definitions, constellation boundaries, and astronomical nomenclature.