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# WFITS header file
# The basic FITS data structure
define LEN_FITS (44 + SZ_FNAME + 1)
define BSCALE Memd[P2D($1)] # FITS bscale value
define BZERO Memd[P2D($1+2)] # FITS bzero value
define TAPEMAX Memd[P2D($1+4)] # IRAF tape max
define TAPEMIN Memd[P2D($1+6)] # IRAF tape min
define IRAFMAX Memr[P2R($1+8)] # IRAF image maximum
define IRAFMIN Memr[P2R($1+9)] # IRAF image minimum
define BLANK Meml[P2L($1+10)] # FITS blank value
define FITS_BITPIX Memi[$1+11] # FITS bits per pixel
define DATA_BITPIX Memi[$1+12] # Data bits per pixel
define SCALE Memi[$1+13] # Scale data?
define BLANK_STRING Memc[P2C($1+19)] # String containing FITS blank value
define TYPE_STRING Memc[P2C($1+31)] # String containing IRAF type
define IRAFNAME Memc[P2C($1+41)] # IRAF file name
# Define the FITS record size
define FITS_RECORD 2880 # Size of standard FITS record (bytes)
# Define the FITS data types
define FITS_BYTE 8 # Number of bits in a FITS byte
define FITS_SHORT 16 # Number of bits in a FITS short
define FITS_LONG 32 # Number of bits in a FITS long
define FITS_REAL -32 # Number of bits in a FITS real * -1
define FITS_DOUBLE -64 # Number of bits in a FITS double * -1
# Define the FITS precision in decimal digits
define BYTE_PREC 3 # Precision of FITS byte
define SHORT_PREC 5 # Precision of FITS short
define LONG_PREC 10 # Precision of FITS long
# Define the FITS blank data values
define BYTE_BLANK 0.0d0 # Blank value for a FITS byte
define SHORT_BLANK -3.2768d4 # Blank value for a FITS short
define LONG_BLANK -2.147483648d9 # Blank value for a FITS long
# Define the FITS integer max and min values
define BYTE_MAX 2.55d2 # Max value for a FITS byte
define BYTE_MIN 1.0d0 # Min value for a FITS byte
define SHORT_MAX 3.2767d4 # Max value for a FITS short
define SHORT_MIN -3.2767d4 # Min value for a FITS short
define LONG_MAX 2.147483647d9 # Max value for a FITS long
define LONG_MIN -2.147483647d9 # Min value for a FITS long
# Define the FITS card image parameters
define LEN_CARD 80 # Length of FITS header card
define LEN_KEYWORD 8 # Length of FITS keyword
define LEN_NAXIS_KYWRD 5 # Length of the NAXIS keyword string
define COL_VALUE 11 # First column of value field
# Mapping of FITS task keywords to IRAF image header keywords
define NAXIS IM_NDIM($1) # Number of dimensions
define NAXISN IM_LEN($1, $2) # Length of each dimension
define OBJECT IM_TITLE($1) # Image title
define HISTORY IM_HISTORY($1) # History
define UNKNOWN Memc[($1+IMU-1)*SZ_STRUCT+1] # IRAF user area
define PIXTYPE IM_PIXTYPE($1) # Image pixel type
define NBPIX IM_NBPIX($1) # Number of bad pixels
define LIMTIME IM_LIMTIME($1) # Last modify limits time
define MTIME IM_MTIME($1) # Last modify time
define CTIME IM_CTIME($1) # Create time
define LEN_USERAREA 28800 # Default user area size
# Set up a structure for the WFITS parameters
# Define the required keywords
define FIRST_CARD 1 # FITS simple parameter
define SECOND_CARD 2 # FITS bitpix parameter
define THIRD_CARD 3 # FITS naxis parameter
# Define the optional FITS KEYWORD parameters
define NOPTIONS 12 # Number of optional keywords
define KEY_BSCALE 1 # FITS bscale parameter
define KEY_BZERO 2 # FITS bzero parameter
define KEY_BUNIT 3 # FITS physical units
define KEY_BLANK 4 # FITS value of blank pixel
define KEY_OBJECT 5 # FITS title string
define KEY_ORIGIN 6 # Origin of FITS tape
define KEY_DATE 7 # Date the tape was written
define KEY_IRAFNAME 8 # Root name of IRAF image
define KEY_IRAFMAX 9 # Maximum value of IRAF image
define KEY_IRAFMIN 10 # Minimum value of IRAF image
define KEY_IRAFBP 11 # Bits per pixel in IRAF image
define KEY_IRAFTYPE 12 # IRAF image data type
define LEN_STRING 8 # Minimum length of a string parameter
define LEN_OBJECT 63 # Maximum length of string parameter
define LEN_ALIGN 18 # Maximum length for aligning parameter
define LEN_ORIGIN 9 # Length of origin string
define LEN_BLANK 11 # Length of the blank string
define NDEC_REAL 7 # Precision of real data
define NDEC_DOUBLE 11 # Precision of double precision data
# Miscellaneous
define CENTURY 1900
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