Assertion: telescope | /r/HasAspect | altazimuth mount
Facets:
value: with total
type: OTHER
Source sentences:
text: The telescope has an altazimuth mount.
text: Each telescope has an alt-azimuth mount with total mass around 350 tonnes, and uses active optics with 150 supports on the back of the primary mirror to control the shape of the thin (177mm thick) mirror by computers.