Physics – Optics
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1236..575a&link_type=abstract
IN: Advanced technology optical telescopes IV; Proceedings of the Meeting, Tucson, AZ, Feb. 12-16, 1990. Part 1 (A91-23201 08-89
Physics
Optics
1
Interferometry, Telescopes, Wave Fronts, Adaptive Optics, Calibrating, Gratings (Spectra), Interferometers, Seeing (Astronomy)
Scientific paper
A system aimed at real-time wavefront analysis at the focus of an astronomical telescope has been developed. The method uses Zernike polynomial descriptions of the fringes from a lateral shearing interferometer and the resulting Zernike coefficients for the sheared state are matrix transformed to those of the real wavefront. Tests to confirm that the method operates correctly are described and preliminary results are given with the interferometer at the focus of a Ritchey-Chretien telescope. Applications include quantitative evaluation and correction of telescope mirror misalignments, active optics, and the determination of dome and atmospheric seeing parameters.
Atad Eli
Harris Jeff. W.
Humphries Colin M.
Salter Victoria C.
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