Reconstructed Images of Alpha Orionis Using Stellar Speckle Interferometry

Abstract

We discuss a recently developed technique to recover nearly diffraction-limited images of supergiant stars such as Orionis (Betelgeuse) from speckle interferometry data. This method relies on the digital identification and coaddition of the brightest individual speckles within a large number of short-exposure special photographs. The resulting average speckle may be thought of as the convolution of a point source speckle profile with the actual object intensity pattern. By making use of this point we have derived angular diameters and limb darkening coefficients in addition to finding evidence of possible surface structure on the star. The limitations of this technique have been determined empirically and they are discussed in this paper.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1976
Accession Number
ADA091328

Entities

People

  • C. R. Lynds
  • Judson W. Harvey
  • Simon P. Worden

Organizations

  • Air Force Research Laboratory

Tags

DTIC Thesaurus Topics

  • Acquisition
  • Air Force
  • Atmospheres
  • Data Acquisition
  • Diameters
  • Diffraction
  • Frequency
  • Identification
  • Intensity
  • Interferometry
  • Observation
  • Observatories
  • Photographs
  • Security
  • Spearography
  • Stars
  • Stellar Atmospheres

Fields of Study

  • Physics

Readers

  • Astronomy/Astrophysics
  • Image Processing and Computer Vision.