The optical positions of four radio sources in HIP and PPM.

Details The optical positions of four radio sources in HIP and PPM. The optical positions of four radio sources in HIP and PPM.

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998pshao..21...63t&link_type=abstract

Publ. Shaanxi Astron. Obs., Vol. 21, No. 2, p. 63 - 65

Astronomy and Astrophysics

Astronomy

Radio Sources: Optical Positions

Scientific paper

From the CCD survey data of the Schmidt telescope of Beijing Observatory, 20 observations which include the radio sources were selected. The centers of the star images were obtained with the software IRAF. HIP and PPM catalogue are adopted as the reference catalogue, and the plate-constant-method is used in reduction. The optical positions of the four extragalactic radio sources, 0851+202, 1228+126, 1442+101, 1749+701, were obtained and compared with the radio positions.

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