Accession Number : ADA189295

Title :   Investigations of High Resolution Imaging through the Earth's Atmosphere Using Speckle Interferometry.

Descriptive Note : Final rept. 1 Aug 84-31 Jul 86,

Corporate Author : STEWARD OBSERVATORY TUCSON ARIZ

Personal Author(s) : Hege, E K

PDF Url : ADA189295

Report Date : 15 Mar 1987

Pagination or Media Count : 360

Abstract : Speckle Interferometry can now be used to produce images with spatial resolution of order 100x sharper than that normally permitted by the Earth's atmosphere. During this two year program of technique development we achieved high resolution imaging capability (wavelength dependent; 60 nrad at 410 nm) and approached that resolution in imaging a geosynchronous communications satellite utilizing the Multiple Mirror Telescope (MMT) and the Fienup method. We continued the pattern of parallel programs established in our previous AFGL work: E.D. Hege, P. A. Strittmatter and N. J. Woolf, Investigations of High Resolution Imaging Through the Earth's Atmosphere Using Speckle Interferometry, AFGL Report AFGL-TR-84-0116, 1984. Specific to this contract work, in our first year we completed a fully co-phased optical beam-combiner for implementation of the full 6.9m aperture imaging capability of the MMT. During our second year we met our final objective, by producing a 100 nrad resolution image of the geosynchronous Earth satellite FLTSATCOMl. We have proposed designs for systems to accomplish in real-time the data integrations necessary for Fienup and Knox-Thompson image reconstructions. Throughout the interval we continued work on algorithm development and seeing calibration. Our most notable achievement was applications of seeing calibration techniques and refinements of the shift-and-add method applied successfully in our scientific program of studies of red supergiants.

Descriptors :   *EARTH ATMOSPHERE, *HIGH RESOLUTION, *IMAGES, *INTERFEROMETRY, *SPECULAR REFLECTION, ALGORITHMS, CALIBRATION, COMMUNICATION SATELLITES, EARTH(PLANET), MIRRORS, PARALLEL ORIENTATION, PATTERNS, RESOLUTION, SPATIAL DISTRIBUTION, SYNCHRONOUS SATELLITES, TELESCOPES

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE