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.

Kilde:

ESO

Om videoen

Id:eso9940b
Udgivelsesdato:13. august 1999
Relaterede pressemeddelelser:eso9940
Spilletid:10 s
Frame rate:30 fps

Om objektet

Kategori:Paranal

Legacy Videos

Legacy Video
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