Astronomy and Astrophysics – Astronomy
Scientific paper
May 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...190.0905k&link_type=abstract
American Astronomical Society, 190th AAS Meeting, #09.05; Bulletin of the American Astronomical Society, Vol. 29, p.789
Astronomy and Astrophysics
Astronomy
Scientific paper
This paper examines the correspondence between two approaches to astrometric observational reductions: the approach based on angular observables used for optical observations, and the approach based on the interferometric delay observable used for VLBI observations. Specifically, of interest here are the algorithms that account for annual and diurnal aberration and gravitational light-bending. These algorithms are important because they must be applied to all wide-angle astrometric measurements, whether ground- or space-based, and regardless of the distance of the objects observed. A procedure is presented by which VLBI algorithms can be used for optical observations. This scheme can help to guarantee consistent treatment of observational results in the two regimes. It also allows for the evaluation of the precision of the algorithms. Differences between angle-based and delay-based algorithms in current use are shown to be less than 1 microarcsecond. However, the physical models used must be improved to reach external accuracies at such levels.
No associations
LandOfFree
A Comparison of Radio and Optical Astrometric Reduction Algorithms does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Comparison of Radio and Optical Astrometric Reduction Algorithms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Comparison of Radio and Optical Astrometric Reduction Algorithms will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-830182