Most metal components of the telescope were built by the UBC Physics and Astronomy machine shop. Alan Schier was instrumental in developing the primary mirror servo control algorithm, and Eric ...

[Hank Green] posted an interesting video about the first liquid mirror telescope from back in the 1850s. At the time, scientists were not impressed. But, these days, people are revisiting the idea.

Because his telescope offered a much greater field ... He cast a two-inch metal mirror and ground it so that it had a spherical curvature. He placed the mirror at one end of a tube.

In his description, the shaped mirror was composed of an array of polished metal plates and the actuators ... mirror located in a plane conjugate to a telescope's primary mirror could be used ...

The European Southern Observatory's (ESO) Extremely Large Telescope (ELT) — the world's largest visible- and infrared-light telescope — is currently under development on the Cerro Armazones mountain ...

Despite all of this, though, telescope mirrors -- the pieces that collect light and produce a close-up, clear image of the distant sky -- can accumulate dust and debris, requiring cleaning.

Telescope mirrors require some kind of metal coating to reflect as much light as possible. JWST uses gold mirrors to catch UV and visible light emitted by early luminous objects. Secondly ...

Giant mirror: Webb's mirror, which captures light, is over 21 feet across. That's over two-and-a-half times larger than the Hubble Space Telescope's mirror. Capturing more light allows Webb to see ...

Adaptive optics relies on wave-front sensors to measure aberrations in light coming into a telescope ... The mirror's surface can be coated with a broad range of metal and multilayer-dielectric ...

The central feature of the telescope is an exquisitely polished, concave primary mirror, 2.4 meters (7.9 feet) in diameter. The primary mirror sits beneath a smaller, secondary mirror that ...

This year marks the 30th anniversary of the Hubble Space Telescope ... metal washer. Conventional null detectors could not measure the required 10-nanometer flatness required for the mirror ...