Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990stin...9113383j&link_type=abstract
Semiannual Progress Report, 1 Feb. - 31 Jul. 1990 McDonald Observatory, Austin, TX.
Astronomy and Astrophysics
Astronomy
Astrometry, Gravitational Waves, Interferometers, Quasars, Radiation Effects, Telescopes, Detection, Open Clusters, Parallax, Photons, Planetary Nebulae
Scientific paper
A detailed study of the effects of gravitational radiation on the relative positions of objects was carried out with the hope that astrometric detection of gravitational radiation might be possible. The results are discouraging. It would appear that narrow-field instruments in the Astrometric Telescope Facility (ATF) class are still several orders of magnitude less accurate than would be required for this very delicate kind of measurement. However, the situation changes considerably when wide-field instruments are considered. An instrument such as POINTS ought to be able to detect gravitational radiation at this level with ease. The list of bright quasars has been augmented. Of particular interest is the finding of quasars near two open clusters and one planetary nebula. These would be useful in determining absolute parallaxes of these objects.
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