The VLT still jiggles in the wind somewhat, but the secondary mirror cancels the effects of these vibrations by moving in the opposite direction up to 70 times a second.OWL would do the same.

• 现在VLT在风中仍会有些许摇晃，但次镜可以朝反方向震动抵消这些晃动造成的影响，频率最高可达每秒70次，OWL也会采取这种设计。