Differential speckle imaging with the cophased multiple mirror telescope

Details Differential speckle imaging with the cophased multiple mirror telescope Differential speckle imaging with the cophased multiple mirror telescope

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986opten..25..712h&link_type=abstract

Optical Engineering (ISSN 0091-3286), vol. 25, June 1986, p. 712-715.

Computer Science

8

Differential Interferometry, Phased Arrays, Reflecting Telescopes, Speckle Patterns, Data Reduction, Image Resolution, Orion Constellation, Pixels, Supergiant Stars, Wiener Filtering

Scientific paper

Differential speckle interferometry has been applied to data obtained using the fully phased six-mirror aperture of te Multiple Mirror Telescope. Wavelength-dependent differences in the appearance of a stellar object are derived from simultaneous observations at two distinct wavebands. The supergiaint star Alpha Orionis was observed this way to investigate its appearance in hydrogen-alpha emission. Data reduction consists of a frame-by-frame weighted deconvolution. An inherent Wiener-type filtering must be removed in order to preserve high spatial frequency information. Results for Alpha Orionis are compared to similar results for the unresolved source Gamma Orionis.

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