Sentences with phrase «wavefront sensing»

At the institute, Dr. van der Marel previously led the telescopes group, which is responsible for issues related to the optics, focus, wavefront sensing and control, and guiding for the Hubble Space Telescope and the James Webb Space Telescope (JWST), as well as the team that is responsible for the calibration and user support of the Hubble Advanced Camera for Surveys (ACS) and the Wide Field and Planetary Camera 2 (WFPC2).

We have also integrated the LLOWFS in the visible high - order control loop of SCExAO, which in closed - loop operation has validated the correction of the non-common path pointing errors between the infrared science channel and the visible wavefront sensing channel with pointing residual of 0.23 mas on sky.

These corrections are made through a process called wavefront sensing and control, which aligns the mirrors to within tens of nanometers.

Not exact matches

A key innovation was the computer control system which, as the telescope moved, could sense errors in the wavefront moving through it and correct the mirror shape for the effects of gravity, wind and temperature minute - by - minute — a technique known as active optics.

To prevent starlight leakage at the inner working angle of a phase mask coronagraph, we have introduced a Lyot - based low - order wavefront sensor (LLOWFS), which senses aberrations using the rejected starlight diffracted at the Lyot plane.