Wonders of Active Optics: Astigmatic

Wonders of Active Optics: Astigmatic

The video shows the effect of astigmatism of the primary mirror. The stellar images change from a line to a square and then to a line in the perpendicular direction. This is caused by the secondary mirror moving back and forth along the optical axis.

Credit:

ESO

Bookmark and Share

About the Video

Id:eso9940b
Release date:13 August 1999
Related releases:eso9940
Duration:10s

About the Object

Type:• X - Paranal

Legacy Videos

Legacy Video
1.8 MB

Also see our