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SOLVE POINTING
CLIC\SOLVE POINTING [beam] [/PLOT] [/COMPRESS [timex]] [/PRINT]
[/OUTPUT filename [NEW|APPEND] [FLUX] [TPOINT]]
[/TOTAL] [/FIX param1 [value1] param2 [value2] ... ]
Find pointing corrections from POINTING scans. All pointing scans in
the current index are processed by a gaussian fit. Its width can be
fixed if the argument 'beam' is given (in arcsec). All continuum sub-
bands and both side bands are averaged. SET AVERAGE METHOD SCALAR is
recommended. The fits may be displayed with option /PLOT.
The option /COMPRESS may be used to average data in a given time inter-
val before processing, to improve the signal-to-noise ratio. Default is
4 seconds.
The presence of option /PRINT produces a procedure file (IN-
TER_OBS:pointing.obs), to be used in OBS for introducing the fitted
pointing offset.
The results may also be written on an output ASCII file if /OUTPUT is
given. The file is given extension .lis by default; a new file is
opened except if APPEND is given as a second argument of option /OUTPUT.
The file is by default in a format suitable for the determination of a
pointing model (program POINT at BURE). The presence of optional argu-
ment FLUX changes the output format for the determination of relative
fluxes (by ASTRO). With argument TPOINT, the output is written in a for-
mat suitable for processing by the TPOINT program.
****** ATF CORNER ******
With option /TOTAL, SOLVE POINTING uses the total power to solve for
pointing errors. In that case, option /FIX may be used to fix one param-
eter. Possible parameters are:
AZ: the azimuth collimation error (arc sec.)
EL: the elevation collimation error (arc sec.)
PEAK: the peak amplitude, in total power units
WIDTH: the HPBW (arc sec.)
ZERO: the off-source zero level, in total power units
With /TOTAL, /COMPRESS does the ON-OFF combination if in beam switching
mode. In that case ZERO is preferrably fixed to zero (e.g. SOLVE POINT-
ING /TOTAL /COMPRESS /PLOT /FIX ZERO 0).
Gildas manager
2014-07-01