Desktop interferometer for optical synthesis imaging

Details Desktop interferometer for optical synthesis imaging Desktop interferometer for optical synthesis imaging

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4838..404l&link_type=abstract

Interferometry for Optical Astronomy II. Edited by Wesley A. Traub. Proceedings of the SPIE, Volume 4838, pp. 404-410 (2003).

Astronomy and Astrophysics

Astronomy

1

Scientific paper

A simple desktop optical interferometer is described and demonstrated as a teaching tool for concepts of long-baseline stellar interferometry. The interferometer is compact, portable, and easily aligned. It sits on a base 8" x 10" and uses an aperture mask which is mounted to rotate within a precision ball-bearing. Fringes produced from an artificial star are observed through a microscope by means of a video camera and are displayed on an overhead television monitor. When the aperture mask is rotated rapidly, the rotating fringe patterns seen on the monitor are observed to synthesize sources that are unresolved by individual holes in the mask. Fringes from an artificial double star are used to illustrate the relationship between fringe visibility and source structure and to demonstrate image synthesis.

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