Laboratory Demonstration Of Image Reconstruction For Coherent Optical System Of Modular Imaging Collectors (COSMIC)

Wesley A Traub

doi:10.1117/12.937584

2 March 1984 Laboratory Demonstration Of Image Reconstruction For Coherent Optical System Of Modular Imaging Collectors (COSMIC)

Wesley A Traub

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Proceedings Volume 0440, Synthetic Aperture Systems I; (1984) https://doi.org/10.1117/12.937584
Event: 27th Annual Technical Symposium, 1983, San Diego, United States

Abstract

The first physical demonstration of the principle of image reconstruction using a set of images from a diffraction-blurred elongated aperture is reported. This is an optical validation of previous theoretical and numerical simulations of the COSMIC telescope array (coherent optical system of modular imaging collectors). The present experiment utilizes 17 diffraction blurred exposures of a laboratory light source, as imaged by a lens covered by a narrow-slit aperture; the aperture is rotated 10 degrees between each exposure. The images are recorded in digitized form by a CCD camera, Fourier transformed, numerically filtered, and added; the sum is then filtered and inverse Fourier transformed to form the final image. The image reconstruction process is found to be stable with respect to uncertainties in values of all physical parameters such as effective wavelength, rotation angle, pointing jitter, and aperture shape. Future experiments will explore the effects of low counting rates, autoguiding on the image, various aperture configurations, and separated optics.

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Wesley A Traub "Laboratory Demonstration Of Image Reconstruction For Coherent Optical System Of Modular Imaging Collectors (COSMIC)", Proc. SPIE 0440, Synthetic Aperture Systems I, (2 March 1984); https://doi.org/10.1117/12.937584

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KEYWORDS

Image processing

Image restoration

Optical filters

Fourier transforms

Imaging systems

Diffraction

Coherent optics

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