Differential Astrometry over 15 degrees

Details Differential Astrometry over 15 degrees Differential Astrometry over 15 degrees

1998-12-02

arxiv.org/abs/astro-ph/9812056v1

New Astron.Rev. 43 (1999) 587-591

Astronomy and Astrophysics

Astrophysics

6 pages, latex2e, 2 figures, To appear in the proceedings of the EVN/JIVE Symposium No. 4, New Astronomy Reviews (eds. Garret,

Scientific paper

10.1016/S1387-6473(99)00059-7

We observed the pair of radio sources 1150+812 and 1803+784 in November 1993 with a VLBI array, simultaneously recording at 8.4 and 2.3 GHz. We determined the angular separation between the two sources with submilliarcsecond accuracy by using differential techniques. This result demonstrates the feasibility of high precision differential astrometry for radio sources separated in the sky by almost 15 degrees, and opens the avenue to its application to larger samples of radio sources.

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