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.

Mynd/Myndskeið:

ESO

Um myndskeiðið

Auðkenni:eso9940b
Útgáfudagur:13. ágúst 1999
Tengdar fréttatilkynningar:eso9940
Tímalengd:10 s
Frame rate:30 fps

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Flokkur:Paranal

Legacy Videos

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