Method and apparatus for realtime-monitoring astronomical object

Details Method and apparatus for realtime-monitoring astronomical object Method and apparatus for realtime-monitoring astronomical object

1988-10-14

1990-04-03

Willis, Davis L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01B 902

Patent

active

049135490

ABSTRACT:
A realtime monitor of an astronomical object such as a double star using speckle interferometry comprises a TV camera for picking up an image of a star which is formed by a telescope, first means for producing an incoherent still picture of the star on the basis of an output from the TV camea, second means for producing a power spectrum of the star by converting the incoherent still picture to a coherent image and then optically Fourier-transforming it, third means for adding the consecutively produced power spectra to obtain an average power spectrum, and fourth means for controlling first, second and third means and calculating a normalized average power spectrum of an object star through dividing the average power spectrum of the object star by that of a reference star.

REFERENCES:
patent: 4563091 (1985-01-01), Dandliker
Gough et al., "Speckle Holography", Optica Acta., vol. 21, No. 3, pp. 243-254, 3/74.
Beddoes et al., "Speckle Interferometry on the 2.5 m Isaac Newton Telescope", JOSA, vol. 66, No. 11, pp. 1247-1251, 11/76.

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