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William Herschel Telescope

PWFS: Pyramid Wavefront Sensor

First light (at ING): 23 November, 2004.

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.

Time allocations:
Nights scheduled since semester 2007B

S. Esposito, E. Pinna, A. Tozzi, A. Puglisi and P. Stefanini, 2005, "Pyramid Wavefront Sensor at the William Herschel Telescope: Towards Extremely Large Telescopes", ING Newsl., 10, 17

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Contact:  (Public Relations Officer)
Last modified: 08 November 2023