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.

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Data e Publikimit:13 Gusht 1999
Publikime të ngjashme:eso9940
Kohëzgjatja:10 s
Frame rate:30 fps

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