SCAN section

General scan information.

SCAN	S
SCAN%HEADER	S
SCAN%HEADER%ZFLX	R	deg	Pointing coefficient (Flexure)
SCAN%HEADER%ECEC	R	deg	Pointing coefficient (P8)
SCAN%HEADER%IE	R	deg	Pointing coefficient (P7)
SCAN%HEADER%AW	R	deg	Pointing coefficient (-P4)
SCAN%HEADER%AN	R	deg	Pointing coefficient (P5)
SCAN%HEADER%NPAE	R	deg	Pointing coefficient (P3)
SCAN%HEADER%CA	R	deg	Pointing coefficient (P2)
SCAN%HEADER%IA	R	deg	Pointing coefficient (P1)
SCAN%HEADER%NFEBE	I		number of frontend-backend combinations
SCAN%HEADER%WOBMODE	C*20		wobbler mode (SQUARE/TRIANGULAR)
SCAN%HEADER%WOBCYCLE	R	sec	wobbler period
SCAN%HEADER%WOBDIR	C*4		wobbler throw direction
SCAN%HEADER%WOBTHROW	D	deg	wobbler throw (can also be used for beam
			switching)
SCAN%HEADER%WOBUSED	L		Wobbler used ?
SCAN%HEADER%TRANFOCU	I	m	(optional, HOLO) transmitter offset from prime
			focus
SCAN%HEADER%TRANFREQ	I	Hz	(optional, HOLO) transmitter frequency
SCAN%HEADER%TRANDIST	I	m	(optional, HOLO) transmitter distance
SCAN%HEADER%ZIGZAG	L		(optional, OTF/RASTER) Scan in zigzag ?
SCAN%HEADER%CROCYCLE	C*20		CAL/REF/ON loop string
SCAN%HEADER%SCANPAR1	D		(optional) spare scan parameter
SCAN%HEADER%SCANPAR2	D		(optional) spare scan parameter
SCAN%HEADER%SCANSKEW	D	user def.	(optional, OTF/RASTER) offset in scan
			direction between lines

SCAN%HEADER%SCANYSPC	D	user def.	(optional, OTF/RASTER) step
			between scan/raster lines
SCAN%HEADER%SCANXSPC	D	user def.	(optional, OTF/RASTER) step along line
			between samples
SCAN%HEADER%SCANTIME	D	user def.	(optional, OTF) time for one line
SCAN%HEADER%SCANXVEL	D	user def.	(optional, OTF) tracking rate along line
SCAN%HEADER%SCANLEN	D	user def.	(optional, OTF/RASTER) line length
SCAN%HEADER%SCANRPTS	I		(optional) number of repeats of each scan line.
			Default 1.
SCAN%HEADER%SCANLINE	I		(optional) number of lines in a scan. Default 1.
SCAN%HEADER%SCANDIR	C*4		(optional) scan direction
SCAN%HEADER%SCANGEOM	C*20		Scan geometry
SCAN%HEADER%SCANMODE	C*20		Mapping mode
SCAN%HEADER%SCANTYPE	C*20		Scan astronomical type
SCAN%HEADER%DISTANCE	D	AU	geocentric distance
SCAN%HEADER%ORBEQUNX	D		Elements equinox: J2000.0 or B1950.0
SCAN%HEADER%ORBEPOCH	D	Julian days	EPOCH, Epoch of orbital elements
SCAN%HEADER%ECCENTR	D		EC, Eccentricity
SCAN%HEADER%INCLINAT	D		IN, Inclination
SCAN%HEADER%OMEGA	D		W, Angle from ascending node to perihelion
SCAN%HEADER%LONGASC	D		OM, Longitude of ascending node (in degrees)
SCAN%HEADER%PERIDIST	D	AU	QR, perihelion distance
SCAN%HEADER%PERIDATE	D	Julian days	TP, Full Julian date of perihelion passage
SCAN%HEADER%MOVEFRAM	L		True if tracking a moving frame. If true,
			the above orbital elements are stored.
SCAN%HEADER%CALCODE	C*4		Calibrator code
SCAN%HEADER%LATOBJ	D	deg	Source latitude in native frame.
SCAN%HEADER%LONGOBJ	D	deg	Source longitude in native frame.
SCAN%HEADER%LONGOFF	D	deg	Longitude offset from catalogue position.
SCAN%HEADER%LATOFF	D	deg	Latitude offset from catalogue position.
SCAN%HEADER%OBJECT	C*10		Source name.
SCAN%HEADER%LATPOLE	D	deg	Basis latitude of native pole.
SCAN%HEADER%LONPOLE	D	deg	Native longitude of celestial pole.
SCAN%HEADER%CRVAL1	D	deg	Native frame zero in basis system (long.)
SCAN%HEADER%CRVAL2	D	deg	Native frame zero in basis system (lat.)
SCAN%HEADER%EQUINOX	R	Julian years	Equinox
SCAN%HEADER%RADECSYS	C*32		additional system definition for ecliptic/
			equatorial coordinates
SCAN%HEADER%CTYPE1	C*8		Basis system (longitude) XLON-SFL
SCAN%HEADER%CTYPE2	C*8		Basis system (latitude) XLAT-SFL
SCAN%HEADER%ETUTC	D	s	Ephemeris Time - UTC time translation
SCAN%HEADER%GPSTAI	D	s	GPS time - TAI translation
SCAN%HEADER%TAIUTC	D	s	TAI-UTC time translation
SCAN%HEADER%UT1UTC	D	s	UT1-UTC time translation
SCAN%HEADER%NOBS	I		Number of observations in this scan
SCAN%HEADER%NOBSTOTAL	I		Number of subscans upon correct completion
SCAN%HEADER%LST	D	s	Local apparent sidereal time (scan start)
SCAN%HEADER%MJD	D	day	Scan start time (modified Julian date) in
			TIMESYS system
SCAN%HEADER%DATE_OBS	C*23		Scan date/time (in TIMESYS system)
SCAN%HEADER%SCANNUM	I		Scan number
SCAN%HEADER%OBSID	C*12		Observer and Operator initials
SCAN%HEADER%PROJID	C*12		Project ID
SCAN%HEADER%SITEELEV	R	m	Observatory elevation

SCAN%HEADER%SITELONG	D	deg	Observatory longitude
SCAN%HEADER%SITELAT	D	deg	Observatory latitude
SCAN%HEADER%TELESCOP	C*13		Telescope name
SCAN%DATA	S
SCAN%DATA%LONGOFF	$n_{\rm off}$ D	deg	longitude offset from catalogue position
SCAN%DATA%LATOFF	$n_{\rm off}$D	deg	latitude offset from catalogue position
SCAN%DATA%FE	$n_{\rm fb}$ I		frontend ID of each frontend-backend combination
			0 = unknown
			1 = A100    2 = B100
			3 = C150    4 = D150
			5 = A230    6 = B230
			7 = C270    8 = D270
			9 = HERA   10 = HERB
SCAN%DATA%BE	$n_{\rm fb}$ I		backend ID of each frontend-backend combination
			0 = unknown    1 = continuum
			4 = VESPA      5 = WILMA
			7 = 4MHz