Assertion: telescope's computer | /r/CapableOf | adjust many support forces
Facets:
value: on the primary mirror
type: LOCATION
value: to maintain the optics
type: PURPOSE
Source sentences:
text: In active optics, an image analyser senses the aberrations of a star image a few times per minute, and a computer adjusts many support forces on the primary mirror and the location of the secondary mirror to maintain the optics in optimal shape and alignment.