High-resolution astronomical imaging by triple correlation processing

Details High-resolution astronomical imaging by triple correlation processing High-resolution astronomical imaging by triple correlation processing

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987spie..828....8w&link_type=abstract

IN: Digital image recovery and synthesis; Proceedings of the Meeting, San Diego, CA, Aug. 17, 18, 1987 (A88-51101 22-35). Bellin

Astronomy and Astrophysics

Astrophysics

Astronomical Photography, Computerized Simulation, Image Reconstruction, Signal To Noise Ratios, Speckle Interferometry, Correlation, Faint Objects, Fourier Transformation, Transfer Functions

Scientific paper

The atmosphere of the earth restricts the resolution of conventional astrophotography to about 1 arcsec. Much higher resolution can be obtained by using speckle methods. The speckle masking method (triple correlation method) yields images of general astronomical objects with diffraction-limited resolution, for example, 0.03 arcsec resolution for a 3.6-m telescope. A 1-km telescope array on the earth would yield images with 10-4arcsec resolution. With a 40-km array in space a fantastic resolution of 10-6arcsec can be achieved at λ ≡200 nm. The author shows speckle masking observations of NGC 3603 and Eta Carinae and computer simulations of optical aperture synthesis.

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