readlc

       Read a FITS lightcurve

       lightcurves, FITS

       readlc,time,rate,error,filename,/bary,/mjd,timerange=[min,max]
       readlc,time,rate,filename,/bary,/mjd,/counts

       FILENAME: Name of the lightcurve to be read

       min,max     : timerange of the lightcurve to be read
       timecol_name: name of the time column in fits file
                     default: 'TIME'
       ratecol_name: name of the rate column in fits file
                     default: 'RATE'
       errcol_name : name of the rate error column in fits file
                     default: 'ERROR'

       /mjd   : calculates the Modified Julian Date from the data in
                the lightcurve and return this time instead of Mission
                Elapsed Time in the time column
       /bary  : read the barycenter corrected timecolumn 'BARYTIME)'
                instead. If no such column is present, a warning is
                printed and the normal timecolumn is read
       /counts: The lightcurve contains COUNTS/BIN, not the timerate

       time : the time column of the lightcurve
       rate : the measured counting rate (resp. photon-number if the
              counts keyword is set) column

       error  : the uncertainty of the count-rate

       readlc needs LOTS of memory - this results in problems
                                     with huge lightcurves

       readlc,time,rate,error,'vela.lc',timerange=[0,1000]
       readlc,time,rate,filename,ratecol_name='RATE1', errcol_name='ERROR1'

 $Log: readlc.pro,v $
 Revision 1.5  2006/03/30 08:46:32  barnsted
 new optional parameters for defining column names
 Revision 1.4  2005/09/22 12:16:46  wilms
 switch off annoying information from readfits
       v1.0 written 1996 by Ingo Kreykenbohm, AIT
       v2.0 1997/03/04 I.K., J.W.: made error an optional argument to
                     save memory and time; further small
                     optimizations
       v2.1 2000/01/20 Joern Wilms: added counts keyword
       v2.2 2000/06/15 JW: cosmetic change in documentation
    CVS Version 1.3 Joern Wilms, 2001/03/22
       improved handling of mjd keyword (now takes into account time
       column in units other than seconds, improved reading of the
       MJDREF keyword and its companions).

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