Celestial Sphere and Coordinate Systems
Celestial sphere, horizon, equatorial and ecliptic coordinate systems and conversions.
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Take a full mock →Q1 · Celestial Sphere and Coordinate Systems · MEDIUM
For an observer at the equator (latitude 0°), what is the maximum altitude that a star with declination +60° can achieve?
Q2 · Celestial Sphere and Coordinate Systems · MEDIUM
An observer at latitude 28°N measures the altitude of a star on the meridian to be 47° above the southern horizon. What is the declination of the star?
Q3 · Celestial Sphere and Coordinate Systems · EASY
The celestial equator is defined as the projection of Earth's equator onto the celestial sphere. At what declination does the celestial equator lie?