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Trigonometric Parallaxes Obtained with the UK Schmidt Telescope

Published online by Cambridge University Press:  04 August 2017

C A Murray ,
P M Corben  and
R W Argyle
C A Murray
Affiliation:
Royal Greenwich Observatory
P M Corben
Affiliation:
Royal Greenwich Observatory
R W Argyle
Affiliation:
Royal Greenwich Observatory

Abstract

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In continuation of a long term programme of measurement of parallaxes and proper motions in the South Galactic Cap from plates taken with the UK Schmidt Telescope and measured in GALAXY at RGO, data for some 800 red stars brighter than B = 17.5 have been derived from two independent plate series. The parallaxes obtained from unfiltered IIaO plates show a large systematic error depending on magnitude compared with those obtained from IIaD plates with GG 495 filter. After correction, the combined trigonometric parallaxes show very satisfactory agreement with photometric parallaxes, and the average r.m.s. error of a combined parallax is found to be about ±0″.012 both from internal and external evidence.

Type
III. Photographic Astrometry
Information
Symposium - International Astronomical Union , Volume 109: Astrometric Techniques , 1986 , pp. 213 - 221
Copyright
Copyright © Reidel 1986 

References

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