Physics – Optics
Scientific paper
Dec 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26as...71..561o&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 71, no. 3, Dec. 1987, p. 561-564.
Physics
Optics
11
Reference Stars, Stellar Spectrophotometry, Ubv Spectra, Astrometry, Cassegrain Optics, Position (Location), Sky Surveys (Astronomy)
Scientific paper
Photometric indices V, B-V, and U-B were measured for about 560 stars of the AGK3R and NPZT catalogs between BD declinations 11 deg and 23 deg, using the 40-cm Cassegrain telescope of the Kvistaberg Observatory from April 1986 to May 1987. The observation procedure and the reduction technique were the same as in the earlier papers of this series by Oja (1984, 1985, 1986, and 1987). The mean errors were calculated from the internal consistency of the data. The accuracy was found to be the same as for the earlier parts of the survey.
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