Eyes on the Skies - Alt-azimuth mount

This 3D animation shows how an alt-azimuth mount works. In order for the telescope to track the movement of a star in the sky, it has to be rotated on two axis, represented with the red lines. Compare with the equatorial mount .

This animation is part of the movie Eyes on the Skies. Read more about it on http://www.eyesontheskies.org/

NOTE: The full "Eyes on the Skies" chapter may be shown and used in its entirety under our usual usage conditions . However since parts of this material is third-party, clips may not be used individually without prior approval.