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Applied Optics

Applied Optics


  • Vol. 19, Iss. 4 — Feb. 15, 1980
  • pp: 504–507

Lensless scanning telescope

Howard B. Edwards  »View Author Affiliations

Applied Optics, Vol. 19, Issue 4, pp. 504-507 (1980)

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A lensless scanning telescope composed of two circular apertures and having good response with minimum aliasing is described. By analogy with an arrangement of two slits, the modulation transfer function (MTF) of this telescope is derived. The MTF of a lensless telescope scanning the earth’s surface from 500-km orbit is developed for both the scan and cross-scan directions. Response of 48% or better at 100-km wavelength in both directions is shown with aliasing errors due to sampling of 1% or less.

© 1980 Optical Society of America

Original Manuscript: August 4, 1979
Published: February 15, 1980

Howard B. Edwards, "Lensless scanning telescope," Appl. Opt. 19, 504-507 (1980)

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  1. J. W. Goodman, Introduction to Fourier Optics (McGraw-Hill, New York, 1968), p. 20.
  2. R. M. Scott, Photogr. Sci. Eng. 3, 201 (1959).
  3. H. B. Edwards, W. P. Chu, Appl. Opt. 18, 262 (1979). [CrossRef] [PubMed]

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