Rigorous compilation of the Northern International Reference Stars (NIRS)

Details Rigorous compilation of the Northern International Reference Stars (NIRS) Rigorous compilation of the Northern International Reference Stars (NIRS)

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phdt.........5c&link_type=abstract

Ph.D. Thesis Florida Univ., Gainesville.

Astronomy and Astrophysics

Astronomy

Astronomical Catalogs, Reference Stars, Parameterization, Star Trackers, Tables (Data)

Scientific paper

The tabular method of determining the systematic differences between two star catalogues is discussed. It is noted that the tabular method is subjective in nature and that the estimation of the model parameters does not use all available model constraints. Furthermore, these estimates are not least squares estimates nor are they unbiased. The simultaneous estimation of both target parameters and model parameters is applied to the compilation of a complete star catalogue. By simultaneously using all available constraints on all available data, more precise estimates for the target parameters are obtained. The more input material of the Northern International Reference Stars (NIRS) is used and the resulting catalogue is compared to the NIRS catalogue compiled by Corbin in 1982 using standard techniques. It is shown that the new estimates of the star parameters have smaller formal errors than estimates derived from the same material but using conventional procedures. Both versions of the NIRS are used to predict the star positions of the later observed Perth 70: A Catalogue of Positions of 24900 Stars and these predicted positions are compared to the actual observed positions.

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