Eyes on the Skies - Equatorial mount

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


ESA/Hubble (M. Kornmesser & L. L. Christensen).

About the Video

Release date:29 June 2011, 12:07
Duration:20 s
Frame rate:30 fps

About the Object



r.titleLarge QT
3.0 MB


r.titleVideo Podcast
2.2 MB
r.titleMedium MPEG-1
8.0 MB
r.titleMedium Flash
2.5 MB


r.titleSmall Flash
1.2 MB
r.titleSmall QT
1014.0 KB

For Broadcasters

Also see our

Privacy policy Accelerated by CDN77