William Herschel
Telescope
Pyramid Wavefront Sensor (PWFS)
First light: 23 November, 2004.
De-commissioned:
Designed and built by: INAF — Osservatorio Astrofisico di Arcetri, Italy.
Description:
Phasing the segmented primary mirror of an ELT is a key work requiring phasing (differential piston correction) and alignment (tip-tilt correction). The pyramid co-phasing wavefront sensor is a prototype that is able to do phasing and alignment of the 72
mirror segments of NAOMI at the same time.
More information:
|
