On Mon, May 30, 2016 at 11:57 AM, Stephen A. Lawrence <sa...@pobox.com> wrote:
If the thing had a 'defocussed' mode one could even imagine spotting a few > temperature sensors around the towers to automatically shut it down in the > case of poor aim. > Seems within the realm of possibility. If the large mirrors are composite mirrors comprised of an array of smaller hexagonal mirrors that are focused using adaptive optics, you could have a slight amount of tension in the support structure that must be countered by the actuators. This tension would cause the array to defocus when power is cut off to the actuators. Eric
