Throughput of diffraction-limited field optics systems for infrared and millimetric telescopes

Physics – Optics

Scientific paper

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Apertures, Infrared Telescopes, Submillimeter Waves, Integral Equations, Mars (Planet), Optimization, Point Spread Functions, Wave Diffraction

Scientific paper

Telescopes for submillimeter wavelengths have point spread functions some millimeters or centimeters in diameter, but the detectors may be only fractions of a millimeter in size. Thus a field aperture and collecting optics are needed. Optimizing the aperture by a calculation of the effects of diffraction on signal and resolution as a function of size of the collecting aperture is shown. Calculations are compared to experimental results from observations of Mars at submillimeter wavelengths.

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