Stellar speckle imaging by reference to different-colored specklegrams

Details Stellar speckle imaging by reference to different-colored specklegrams Stellar speckle imaging by reference to different-colored specklegrams

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995optl...20.1175b&link_type=abstract

Optics Letters, Volume 20, Issue 10, May 15, 1995, pp.1175-1177

Physics

Optics

1

Speckle Phenomena, Image Reconstruction, Interferometry, Adaptive Optics, Imaging, Astronomy

Scientific paper

Stellar specklegrams at different wavelengths are examined. The position of the brightest speckle at one wavelength is shown to coincide nearly with that at a widely separated wavelength. The shift-and-add operation for specklegrams at one wavelength produces a high-resolution stellar image at the other wavelength. We show that the shift-and-add operation at 450 nm results in a high-resolution image at 800 nm by use of observational speckle data from which specklegrams at these wavelengths are taken simultaneously.

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