Celestial Sphere and Coordinate Systems

The point directly above you is called the

• zenith

• nadir

• celestial equator

• ecliptic

The point directly below you is the

• zenith

• nadir

• celestial equator

• meridian

Your median line connects....

• N to S and through the zenith

• N to S and through the nadir

• E to W and through the zenith

• E to W and through the nadir

What star is at the celestial pole?

• polaris

• rigel

• betelguese

• sirius

Which coordinate system is based on the observer?

• Altitude/Azimuth

• Right Ascension/Declination

Which coordinate system is also known as the horizon coordinate system?

• Altitude/Azimuth

• Right Ascension/Declination

Which coordinate system has the horizon, where you are standing in Pittsboro, at 0 degrees?

• Altitude/AZ

• RA/DEC

Which coordinate system as the celestial equator at 0 degrees?

• Alt/Az

• RA/DEC

Which cardinal direction is at 0 degrees Azimuth?

• North

• South

• East

• West

If you were told to face 90 degrees Azimuth, what direction would you face?

• North

• South

• East

• West