h a l f b a k e r y
A hive of inactivity
add, search, annotate, link, view, overview, recent, by name, random
news, help, about, links, report a problem
or get an account
Actuators, like elevators on rails, rise the mirrors to approximate position to form a parabola. Then, precise, computer-controlled magnetic field rotates the mirror bits sitting in vacuum bubbles (like light bulbs) precisely to form a parabola. with a focal point. A strong drone with stabilizer flies
to the focal point, carrying an ocular, and a CCD camera.
A hope: 0.5 kilometer-diameter telescope.
MIT Invents A Shapeshifting Display You Can Reach Through And Touch [Inyuki, May 12 2015]
Some-one's been on the NASA website again... [neutrinos_shadow, May 13 2015]
||If the mirrors are inside evacuated glass modules, then the
light will probably be distorted passing through the glass. It
can be compensated-for, of course, at the cost of making
each mirror more complex.
||[Vernon], I was just afraid of the winds, if they were suspended in magnetic field, and that's why evacuated glass modules.
||This might makes even more sense as a space
telescope. You don't have to worry about wind in
orbit. This could make the telescope expandable by
dividing the mirrors into several launches. Also, if it
gets hit by a piece of space debris, it might only
take out a couple mirrors.
||Of course it might be a lot harder to move the
whole thing to avoid space debris.