define	MAX_RANGES	100
define	PSCALE		6.624	# KPNO plate scale arcsec/mm
define	CPSCALE		6.560	# CTIO plate scale arcsec/mm
define	XY_ZERO_PT	24.5	# xy zero points
define	MAX_SLITS	100	# Maximum number of slits allowed
define	N_PARAMS	5	# Number of parameters defining each slit
define	START_COLUMN	49	# First column containing slit information
define	LEN_USER_AREA	0
define	LEN_KEYWORD	8
define	CLEAR		255
define	SATURATE	0
define	LEN_IDSTRING	20