Practical limits to ground based interferometry and its impact on space interferometry

Details Practical limits to ground based interferometry and its impact on space interferometry Practical limits to ground based interferometry and its impact on space interferometry

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987esasp.273..145s&link_type=abstract

In ESA, ESA Workshop on Optical Interferometry in Space p 145-149 (SEE N88-10613 01-74)

Astronomy and Astrophysics

Astronomy

Interferometry, Space Observations (From Earth), Technology Assessment, Astrometry, Laser Interferometry, Metrology, Thermal Stability

Scientific paper

A phase coherent stellar interferometer designed to make astrometric and stellar diameter measurements, in a fully automatic mode, is discussed. Experience shows that this instrument has the mechanical accuracy and thermal stability necessary for operation as an absolute interferometer, one whose mechanical and thermal imperfections are effectively nonexistent. A future absolute interferometer with 1 m elements can make photon starved measurements of fringe amplitude and closure phase on objects as faint as 15 mag, competitive with many first generation space interferometers with 30 to 50 cm apertures.

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