Keywords: mira

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### 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 | D | deg | longitude offset from catalogue position
SCAN%DATA%LATOFF | D | deg | latitude offset from catalogue position
SCAN%DATA%FE | 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 | I |  | backend ID of each frontend-backend combination
|  |  | 0 = unknown 1 = continuum
|  |  | 4 = VESPA 5 = WILMA
|  |  | 7 = 4MHz

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