ReadMe File
                               13 February 2002

You have downloaded a gzipped, tar file containing data from the PLANET 
Collaboration paper entitled:

                    First Microlens Mass Measurement: 
                  PLANET Photometry of EROS BLG-2000-5
    
  Jin H. An, M. D. Albrow, J.-P. Beaulieu, J. A. R. Caldwell, D. L. Depoy,
  M. Dominik, B. S. Gaudi, A. Gould, J. Greenhill, K. Hill, S. Kane,
  R. Martin, J. Menzies, R. W. Pogge, K. R. Pollard, P. D. Sackett,
  K. C. Sahu, P. Vermaak, R. Watson, and A. Williams

                         (The PLANET Collaboration) 

This paper has been accepted for publication in volume 572 of the 
2002 Astrophysical Journal and is also available through the 
electronic archives at http://arXiv.org/abs/astro-ph/0110095.  
Please reference this article if you make use of these data.

In addition to this ReadMe file, the tar file consists of 5 ascii data files.  

(data files)
eros-blg-2000-5.saao.i.dophot  (SAAO 1m/I; Sutherland, South Africa)
eros-blg-2000-5.yalo.i.dophot  (YALO 1m/I; Cerro Tololo, Chile)
eros-blg-2000-5.utas.i.isis    (Canopus 1m/I; Canopus, Tasmania, Australia)
eros-blg-2000-5.perth.i.isis   (Perth 0.6m/I; Bickley, Western Australa, ..)

(lightcurve model data
eros-blg-2000-5.model.lightcurve

The data files contains the PLANET collaboration final I-band light curve
for the Galactic bulge microlensing event EROS BLG-2000-5, and is arranged
as follows.

 .dophot file
col1   magnitude    Instrumental I magnitude as reported by DoPHOT
col2   error        Uncertainty in magnitude as reported by DoPHOT
col3   timestamp    HJD - 2450000.0 at mid-exposure
col4   FWHM (arcsec)  Full width at half maximum of stellar image

 .isis file
col1   flux         Differential I flux as reported by ISIS
col2   error        Uncertainty in fluxes as reported by ISIS
col3   timestamp    HJD - 2450000.0 at mid-exposure
col4   FWHM (arcsec)  Full width at half maximum of stellar image

 .lightcurve file
col1   data number  the order the point has been read by the program
col2   observatoty code
                    1 = SAAO
                    2 = UTAS
                    3 = YALO
                    4 = Perth
col3   date stamp    HJD - 2450000.
col4   flux deviation     
                (flux_model - flux_obs)/error_flux
col5   flux difference
                 flux_obs - flux_model
col6   flux error
col7   observed magnification
                (flux_obs - F_b)/F_s
col8   model predicted magnification
col9   "magnitude" residual
                (2.5/ln10)*(flux_obs-flux_model)/(F_s*magnification)
col10  "magnitude" error
                (2.5/ln10)*error_flux/flux_obs
col11  FWHM of seeing disk in arcsec

For detailed information about this event and analysis based on these
data sets, please refer to the PLANET paper above.