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Digital Speckle Interferometry to Measure the Angular Diameters Of Faint Objects

Published online by Cambridge University Press:  02 August 2016

Gene Hubbard ,
Mike Reed ,
Peter Strittmatter ,
Keith Hege  and
Simon P. Worden
Gene Hubbard
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721
Mike Reed
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721
Peter Strittmatter
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721
Keith Hege
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721
Simon P. Worden
Affiliation:
Air Force Geophysics Laboratory, Sacramento Peak Observatory, Sunspot, NM 88349

Abstract

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We have developed a digital speckle camera for use on the University of Arizona 90-inch telescope. This camera uses a CID detector to provide photon locations in an image, or an analog image for brighter objects. We have used this system to observe Saturn's satellites Rhea and Iapetus. Using a correlation speckle technique, we have determined the angular diameter of these objects to be 1487 ± 40 km for Rhea, and 1200 ± 132 km for Iapetus.

Type
The Scientific Programme
Information
International Astronomical Union Colloquium , Volume 50: High Angular Resolution Stellar Interferometry , January 1979 , pp. 28-1 - 28-8
Copyright
Copyright © 1979

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