Differential Speckle Imaging With The Cophased Multiple Mirror Telescope

J. C. Hebden; E. K. Hege; J. M. Beckers

doi:10.1117/12.949553

25 November 1985 Differential Speckle Imaging With The Cophased Multiple Mirror Telescope

J. C. Hebden, E. K. Hege, J. M. Beckers

Proceedings Volume 0556, Intl Conf on Speckle; (1985) https://doi.org/10.1117/12.949553
Event: 29th Annual Technical Symposium, 1985, San Diego, United States

Abstract

A new technique known as Differential Speckle Interferometry has been applied to data obtained using the fully-phased six-mirror aperture of the Multiple Mirror Telescope. By observing stellar objects at two distinct wavebands simultaneously, differences in the object resulting from the different wavelengths can be derived. Observations were made of the supergiant star Alpha Orionis in order to investigate the Hydrogen-alpha emission from the surrounding envelope. The data reduction process consists of a frame-by-frame weighted deconvolution procedure. This process involves an inherent Wiener-type filtering which must be removed in order to preserve high spatial frequency information. Results for Alpha Orionis and for the unresolved source Gamma Orionis are presented.

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J. C. Hebden, E. K. Hege, and J. M. Beckers "Differential Speckle Imaging With The Cophased Multiple Mirror Telescope", Proc. SPIE 0556, Intl Conf on Speckle, (25 November 1985); https://doi.org/10.1117/12.949553

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KEYWORDS

Signal to noise ratio

Telescopes

Speckle

Mirrors

Stars

Fourier transforms

Sensors

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