Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981spie..288..208m&link_type=abstract
In: Solid state imagers for astronomy; Proceedings of the Meeting, Cambridge, MA, June 10, 11, 1981. (A82-32577 15-35) Bellingha
Astronomy and Astrophysics
Astronomy
Astrometry, Atmospheric Effects, Charge Coupled Devices, Main Sequence Stars, Stellar Parallax, Telescopes, Astronomical Photography, Atmospheric Models, Point Spread Functions, Precision, Stellar Luminosity
Scientific paper
The KPNO 4-m/CCD parallax program, whose goal is to determine distances for a sample of intrinsically faint normal and degenerate main-sequence stars, is reported. Astronomical and computational difficulties associated with CCD astrometry which have been encountered so far, are described, and the astrometric suitability of the Texas Instruments 800 x 800 three-phase CCD is discussed. The KPNO 4-m/CCD parallax program is conventional in all respects, except for the detector; the parallax star is measured against a reference frame of adjacent stars to detect its relative motion. Guiding is done by the automatic guider incorporated into the leaky memory of the acquisition television camera.
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