Observations of the Sun during 1990-1992 with the astrolabe of Santiago J/A+AS/102/11 J/A+AS/102/11 Observations of the Sun during 1990-1992 with the Observations of the Sun during 1990-1992 with the astrolabe of Santiago F Noel Astron. Astrophys. Suppl. Ser. 102 11 1993 1993A&AS..102...11N astrolabe observations solar positions and semi-diameter *** No Description Available ***
Sun observations at 30 deg zenith distance Sun observations at 60 deg zenith distance date Date (year-1900,month,day) --- MJD Modified julian day d EUB Zenith distance residual east upper border arcsec ELB Zenith distance residual east lower border arcsec WLB Zenith distance residual west lower border arcsec WUB Zenith distance residual west upper border arcsec dAlpha dAlpha = Right ascension (O-C) s e_dAlpha Sigma of dAlpha s Y Y=Declination (O-C) + Zenith distance (Observed-Adopted). arcsec dD dD=Sun semi-diameter (O-C) arcsec e_dD Sigma of dD and Y arcsec DR Observed Sun semi-diameter reduced to AU. arcsec Patricia Bauer CDS 1993Sep28 J_A+AS_102_11.xml