Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ycat..41350227j&link_type=abstract
VizieR On-line Data Catalog: J/A+AS/135/227. Originally published in: 1999A&AS..135..227J
Astronomy and Astrophysics
Astronomy
Sun
Scientific paper
In January 1997, at the Observatsrio Nacional (ON), Rio de Janeiro, Brazil, CCD observations of the solar diameter with a Danjon astrolabe equipped with a variable angle reflecting prism began. This prism is operated manually and enables to observe the Sun many times per day and all year round on the Southern latitude φ=-22°54'. Thanks to this and owing to a large number of sunny days at Rio de Janeiro, a high density of observations was achieved - 2900 East and 1730 West observations during the first 18 months. (1 data file).
Andrei Alexander H.
Jilinski E. G.
Laclare Francis
Penna Jucira Lousada
Puliaev S.
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