Large amplitude tip/tilt estimation by geometric diversity for multiple-aperture telescopes
نویسندگان
چکیده
منابع مشابه
Polarimetric calibration of large-aperture telescopes. I. Beam-expansion method.
A concept is described for the high-accuracy absolute calibration of the instrumental polarization introduced by the primary mirror of a large-aperture telescope. This procedure requires a small aperture with polarization-calibration optics (e.g., mounted on the dome) followed by a lens that opens the beam to illuminate the entire surface of the mirror. The Jones matrix corresponding to this ca...
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A new method for absolute polarimetric calibration of large telescopes is presented. The proposed method is highly accurate and is based on the calibration of a small sub-aperture, which is then extended to the full system by means of actual observations of an astronomical source. The calibration procedure is described in detail along with numerical simulations that explore its robustness and a...
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Cost data for ground-based telescopes of the last century are analyzed for trends in the relationship between aperture size and cost. We find that for apertures built prior to 1980, costs scaled as aperture size to the 2.8 power, which is consistent with the previous finding of Meinel (1978). After 1980, ‘traditional’ monolithic mirror telescope costs have scaled as aperture to the 2.5 power. T...
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This paper deals with the nonlinear free vibration of thick annular functionally graded material plates. The thickness is assumed to be constant. Material properties are assumed to be graded in the thickness direction according to a simple power law distribution in terms of the volume fractions of the constituents. The formulations are based on the first-order shear deformation plate theory and...
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ژورنال
عنوان ژورنال: Journal of the Optical Society of America A
سال: 2017
ISSN: 1084-7529,1520-8532
DOI: 10.1364/josaa.34.001272