Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pitt.rept.....g&link_type=abstract
Final Technical Report, 1980 - 1988 Pittsburgh Univ., PA. Dept. of Physics and Astronomy.
Astronomy and Astrophysics
Astronomy
Astrometry, Astronomical Observatories, Astronomical Photometry, Extrasolar Planets, Photometers, Planetary Systems, Refracting Telescopes, Angular Resolution, Binary Stars, F Stars, Photoelectric Cells, Stellar Motions, Stellar Parallax, Stellar Spectra, Video Equipment
Scientific paper
The accomplishments of the observatory's search for planetary systems are summarized. Among these were the construction, implementation, and regular use of the Multichannel Astrometric Photometer (MAP), and the design, fabrication and use of the second largest refractor objective built since 1950. The MAP parallax and planetary observing programs are described. Various developments concerning alternate solid state photodetectors and telescope instrumentation are summarized. The extreme accuracy of the system is described in relation to a study of the position and velocity of the members of the open cluster Upgren 1. The binary star system stringently tests the theory of stellar evolution since it is composed of an evolved giant F5 III and a subgiant F5 IV star. A study that attempts to measure the luminosities, surface temperatures, and masses of these stars is discussed.
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