A Comparison of Radio and Optical Astrometric Reduction Algorithms
Abstract
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 very long baseline radio interferometry (VLBI) observations. Specifically, of interest here is the group of algorithms that have become standard in accounting for the physical effects traditionally called 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1998
- Accession Number
- ADA423227
Entities
People
- G. H. Kaplan
Organizations
- United States Naval Observatory