STRUCT       PhotCode
EXTNAME      DVO_PHOTCODE_RAW
TYPE         BINTABLE
SIZE         104
DESCRIPTION  DVO Photcode Description Table 

# elements of data structure / FITS table
FIELD  code,         CODE,          unsigned short, code number (stored in Measure.source) 
FIELD  name,         NAME,          char[32],       name for filter combination 
FIELD  type,         TYPE,          char,           PRI/SEC/DEP/REF 
FIELD  dummy,        DUMMY,         char[3],        padding
FIELD  C,            C_LAM,         short,          primary phot calibration terms (millimags) 
FIELD  dC,           C_LAM_ERR,     short,          primary phot calibration terms (millimags) 
FIELD  dX,           X_ERR,         short,          primary phot calibration terms (millimags) 
FIELD  K,            K,             float,          secondary phot calibration terms (millimags) 
FIELD  c1,           C1,            int,            color is average.M[c1] - average.M[c2] 
FIELD  c2,           C2,            int,            color is average.M[c1] - average.M[c2] 
FIELD  equiv,        EQUIV,         int,            this dependent filter is equivalent to equiv PRI/SEC
FIELD  Nc,           NC,            int,            number of color terms 
FIELD  X,            X,             float[4],       color terms $X[0]*mc + X[1]*mc^2 + X[2]*mc^3$, etc 
FIELD  astromScale,  ASTROM_SCALE,  float,          astrom error = mag error * astromScale
FIELD  photSysErr,   PHOT_SYS_ERR,  float,          systematic photometric error
FIELD  padding,      PADDING,       float[4],       placeholder
