Citation
Abstract
VLBI measurements at 2290 MHz on baselines of ~104 km between Deep Space Network stations have been used to identify sources that are suitable for precision astrometric applications. In addition, the observations are used to determine the positions of the milliarcsecond nuclei in 546 extragalactic radio sources. Estimated accuracies, generally range from ~0"5 to 1"0 in both right ascension and declination, with ~6% of the sources having estimated uncertainties >3''5 in at least one position component. Arcsecond positions serve as a useful starting point in the construction of high-precision VLBI reference frames, and are also important for unambiguous determination of optical counterparts to compact radio sources.
Details
- Volume
- 42-66
- Published
- December 15, 1981
- Pages
- 37–48
- File Size
- 982.4 KB