Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...118..201g&link_type=abstract
Astronomy and Astrophysics, vol. 118, no. 1, Feb. 1983, p. 201, 202. Research supported by the Deutsche Forschungsgemeinschaft.
Astronomy and Astrophysics
Astronomy
3
Astrometry, Bl Lacertae Objects, Position (Location), Radio Sources (Astronomy), Astronomical Photography, Reference Stars
Scientific paper
Positions of the four radio sources 3C84, OJ287, 3C371, and BL Lac are given with internal accuracies of a few hundreds of arcsec. The positions are based on four or more plates per source. A quadratic transformation model was used for the reductions. No significant magnitude or color equation was found except for six plates of BL Lac, where the color term was included in the reduction. The results are compared with those obtained by other investigators.
Geffert Michael
Richtler Tom
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