Astrometric experiments for the large space telescope

Details Astrometric experiments for the large space telescope Astrometric experiments for the large space telescope

Mar 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975spam.rept...49f&link_type=abstract

In ESRO Space Astrometry p 49-58 (SEE N75-30957 21-89)

Astronomy and Astrophysics

Astronomy

1

Astrometry, Astronomical Coordinates, Hubble Space Telescope, Parallax, Binary Stars, Gyroscopes, Optical Scanners, Position (Location)

Scientific paper

The basic astrometry problems are reviewed to which the LST will offer major contributions: parallaxes, binary stars, stellar dimensions, and fundamental coordinate system. Two novel approaches to setting up the fundamental coordinate system are discussed: a system of precision gyroscopes, and an orthogonal axis telescope. The relative accuracy of positions over the whole sky should be in the order of + or - 0.001 arc sec of arc after several measurements. The Astrometric Multiplexing Area Scanner (AMAS) is discussed as a means of obtaining parallax measurements. This instrument, in its prototype stage, is measuring relative stellar positions to + or - 2 micron (m.e.). The theoretical limit is in the submicron range.

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