Access to Astronomical Catalogues

J/A+A/375/614   Astrolabe observations of the Sun in 1990-2000    (Noel, 2001)
Astrometric observations of the Sun at Santiago: 1998-2000.
    Noel F.
   <Astron. Astrophys. 375, 614 (2001)>
   =2001A&A...375..614N
ADC_Keywords: Sun; Positional data

Keywords: solar astrometry, astrolabe observations


Description:
    The two tables are an update of all observations (1990-2000) of the
    Sun performed at Santiago, Chile, with a modified Danjon astrolabe at
    30° and 60° zenith distances.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table3.dat        91      568   1990-2000 Sun observations at 30° zenith distance
table4.dat        91     1106   1990-2000 Sun observations at 60° zenith distance


See also:
   J/A+AS/102/11  : Astrolabe observations of the Sun in 1990-1992 (Noel 1993)
   J/A+AS/106/327 : Observations of the Sun during 1993 at Santiago (Noel 1994)
   J/A+AS/106/441 : Second catalogue of Santiago (Noel, 1994)
   J/A+AS/113/131 : Observations of the Sun during 1994 (Noel, 1995)
   J/A+AS/132/195 : Astrolabe observations of the Sun in 1995-1997 (Noel 1998)
   J/A+A/384/650  : CCD solar diameter measurements in 1999-2000 (Penna+, 2002)
   J/A+AS/135/227 : Solar diameter observations in 1997-1998 (Jilinski+, 1999)
   J/A+AS/143/265 : Solar diameter observations in 1998-1999 (Puliaev+, 2000)


Byte-by-byte Description of file: table3.dat table4.dat

   Bytes Format Units   Label     Explanations

   1- 10  A10 "YYYY/MM/DD" Date   Date
  12- 20  F9.3  d       MJD       Modified Julian day
  22- 27  F6.3  arcsec  Zeu       ?=99.990 Zenith distance residual east upper
                                        border
  29- 34  F6.3  arcsec  Zel       ?=99.990 Zenith distance residual east lower
                                        border
  36- 41  F6.3  arcsec  Zwl       ?=99.990 Zenith distance residual west lower
                                        border
  43- 48  F6.3  arcsec  Zwu       ?=99.990 Zenith distance residual west upper
                                        border
  50- 56  F7.4  s       dRA       ?=99.9990 Differential Right ascension (O-C)
  58- 63  F6.4  s       e_dRA     ?=9.9990 Sigma of DRA
  65- 70  F6.3  arcsec  Y         ?=99.990 Zenith distance (Observed-Adopted)+
                                          Declination(O-C) cos S.
  72- 77  F6.3  arcsec  dDSun     ?=99.990 Sun semidiameter (O-C)
  79- 83  F5.3  arcsec  e_Y       ?=9.990  Sigma of dDSun and Y
  85- 91  F7.3  arcsec  DSun      ?=0.000 Observed Sun semidiameter reduced to AU.


Acknowledgements: Fernando Noel 

(End)                                          Patricia Bauer [CDS]  09-Jul-2001