========================================================================== J/A+AS/143/265 Solar diameter observations in 1998-1999 (Puliaev+, 2000) The following files can be converted to FITS (extension .fit .fgz or .fiZ) table.dat ========================================================================== Query from: http://vizier.u-strasbg.fr/cgi-bin/VizieR?-source=J/A+AS/143/265 ==========================================================================
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Beginning of ReadMe : J/A+AS/143/265 Solar diameter observations in 1998-1999 (Puliaev+, 2000) ================================================================================ Solar diameter observations at Observatorio Nacional in 1998-1999. Puliaev S., Penna J.L., Jilinski E.G., Andrei A.H. <Astron. Astrophys. Suppl. Ser. 143, 265 (2000)> =2000A&AS..143..265P ================================================================================ ADC_Keywords: Sun Keywords: Sun: general, fundamental parameters Abstract: In January 1997, at the Observatsrio Nacional (ON), Rio de Janeiro, Brazil, digital CCD observations of the solar diameter began with a Danjon astrolabe adapted for solar observations and equipped with a variable angle reflecting prism. The prism enables observations of the Sun several times per day and all year round at the southern latitude phi=-22deg 54'. As of June 1999, about 9000 observations have been made. The mean value of the apparent semi-diameter is 959.13"+/-0.01". Here we report on the results obtained between July 1998 and June 1999. In 162 days 4276 observations were made. For this period the mean apparent semi-diameter is 959.07"+/-0.02". No significant difference between the apparent semi-diameters is found as observed on the East and West sides of the meridian.
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