27 December 1990 Real-time processor for stellar speckle interferometry using microchannel spatial light modulator
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Abstract
To obtain the averaged Fourier power spectrum of a time-varying stellar speckle images from a binary star a portable real-time Fourier-transform processor is developed for stellar speckle interferometry, in which the Fourier transform of the image is done optically by using a microchannel spatial light modulator. Several double star images are analyzed on the telescope sites by the real-time processor. The cycle time of 2-10 Hz is achieved in this instrument depending upon incoming light level.
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Junji Ohtsubo, Takeshi Utakouji, Tamiki Takemori, Katsuyoshi Fujita, Syuzo Isobe, "Real-time processor for stellar speckle interferometry using microchannel spatial light modulator", Proc. SPIE 1347, Optical Information Processing Systems and Architectures II, (27 December 1990); doi: 10.1117/12.23432; https://doi.org/10.1117/12.23432
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