text: #ifndef INCL_STISPHT_H
  #define INCL_STISPHT_H
  
  /* This contains factors for converting from count rate to absolute flux,
     read from the photometry table _pht.
  
     This was moved out from calstis6.h and calstis7.h to include the
     blaze shift correction parameters (IB, 04Feb02).
  */
  
  typedef struct {
  	char bunit[STIS_FITS_REC];	/* units for flux-calibrated data */
  	int allocated;		/* true if memory has been allocated */
  	int nelem;		/* size of wavelength and flux corr arrays */
  	double *wl;		/* array of wavelengths */
  	double *thru;		/* array of throughputs (QE) */
  	double *error;		/* array of throughput errors */
  	double *pcorr;		/* array of correction factors */
  
  	int blazecorr;		/* calibration switch */
  
  	int mref;		/* reference order # of sens. function */
  	double wref;		/* central wavel. of mref order in sens. func.*/
  	double yref;		/* A2 position of mref order in sens. func.*/
  	double mjd;		/* observ. date of sens. function */
  
  	double mx;		/* x shift scale factor */
  	double my;		/* y shift scale factor */
  	double mt;		/* time shift scale factor (pixel/day)*/
  	double m0;		/* blaze shift zero point offset */
  
  	double wpos;		/* wavel. of pixel 512 in order mref in data */
  	double ypos;		/* A2 position of mref order in data */
  	double disp;		/* dispersion for order mref in data */
  } PhotInfo;
  
  #endif /* INCL_STISPHT_H */
  