The limitation of wavefront tilt sensor in adaptive astronomical telescope

Details The limitation of wavefront tilt sensor in adaptive astronomical telescope The limitation of wavefront tilt sensor in adaptive astronomical telescope

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1334..139c&link_type=abstract

IN: Current developments in optical engineering IV; Proceedings of the Meeting, San Diego, CA, July 9, 10, 1990 (A92-17301 05-35

Physics

Optics

Adaptive Optics, Stellar Magnitude, Telescopes, Wave Fronts, Attitude (Inclination), Earth Surface, Real Time Operation

Scientific paper

The limitations of a Hartmann type wavefront sensor are theoretically and experimentally studied based on photon counting technique. An experimental setup for simulation of single subaperture adaptive astronomical telescope is described. The results of experiments and analyses show that a star of the 8th magnitude can be dealt with by this kind of wavefront sensors within 1 ms of time and with lambda/10 of wavefront distortion detection sensitivity. As for calibration of experiments, an algorithm related to luminous flux at entrance pupil of telescope and its corresponding photoelectron rate detected by the wavefront sensor is presented and verified by experiments.

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