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The Reflecting Heliometer of Rio de Janeiro after 6 years of activity

Published online by Cambridge University Press:  09 September 2016

S. C. Boscardin ,
C. Sigismondi ,
J. L. Penna ,
V. D'Avila ,
E. Reis-Neto  and
A.H. Andrei
S. C. Boscardin
Affiliation:
ON-MCTI, RJ/BR, email: sergio.boscardin@on.br
C. Sigismondi
Affiliation:
ICRA/Sapienza, Roma/IT, email: sigismondi@icra.it
J. L. Penna
Affiliation:
ON-MCTI, RJ/BR, email: sergio.boscardin@on.br
V. D'Avila
Affiliation:
UERJ, RJ/BR
E. Reis-Neto
Affiliation:
MAST-MCTI, RJ/BR
A.H. Andrei
Affiliation:
ON-MCTI, RJ/BR, email: sergio.boscardin@on.br OV-UFRJ, RJ/BR SYRTE/OP, Paris/FR
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Abstract

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Started its regular, daily operational phase in 2011, by the occasion of the Symp264 in the XXVII IAU GA at Rio de Janeiro, the results so far obtained show that the Heliometer of the Observatorio Nacional fulfilled its planed performance of single measurement to the level of few tens of milli-arcsecond, freely pivoting around the heliolatitudes without systematic deviations or error enhancement. We present and discuss the astrometric additions required on ground based astronomic programs. We also discuss instrumental and observations terms, namely the constancy of the basic heliometric angle, against which the measurements are made, and the independence to meteorological and pointing conditions.

Keywords

Solar Diametermethods: data analysisinstrumentation: high angular resolutionSun: fundamental parametersSun: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S320: Solar and Stellar Flares and their Effects on Planets , August 2015 , pp. 339 - 341
Copyright
Copyright © International Astronomical Union 2016 

References

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