setmosaicfield(sourcename, calcode, fieldcenter, xmosp, ymosp, mosspacing, distance)
Description
Set mosaic fields by internally invoking
setfield multiple times.
Currently only handle a rectangular mosaicing pattern.
Either setfield or setmosaicfield must be invoked at least once before
observe.
If the distance to the object is set then the phase term includes a
curvature for the near-field effect at the center of the image.
Arguments
sourcename |
|
Name of source or field (must be specified). |
|
|
Allowed: |
String |
|
|
Default: |
'unknown' |
calcode |
|
Calibration code |
|
|
Allowed: |
String |
|
|
Default: |
'' |
fieldcenter |
|
Coordinates of mosaic field center |
|
|
Allowed: |
MDirection |
xmosp |
|
Number of mosaic pointing in horizontal direction |
|
|
Allowed: |
Int |
|
|
Default: |
1 |
ymosp |
|
Number of mosaic pointing in vertical direction |
|
|
Allowed: |
Int |
|
|
Default: |
1 |
mosspacing |
|
Spacing between mosaic pointings |
|
|
Allowed: |
Quantity |
|
|
Default: |
'1arcsec' |
distance |
|
Distance to the object |
|
|
Allowed: |
String |
|
|
Default: |
'0km' |
Example
mysim.setconfig(telescopename='VLA', x=xx, y=yy, z=zz, dishdiameter=diam,
mount='alt-az', antname='VLA',
coordsystem='local', referencelocation=dm.observatory('vla'));
mysim.setspwindow(spwname='XBAND', freq='8GHz', deltafreq='50MHz',
freqresolution='50MHz', nchannels=1, stokes='RR
LL');
dir0 := dm.direction('B1950', '16h00m0.0', '50d0m0.000')
mysim.setmosaicfield(sourcename='SIMU1', fieldcenter=dir0,
xmosp=2, ymosp=2, mosspacing='154.5arcsec');
mysim.settimes(integrationtime='10s');
mysim.observe('SIMU1_1', 'XBAND', starttime='0s', stoptime='100s');
mysim.observe('SIMU1_2', 'XBAND', starttime='110s', stoptime='210s');
mysim.observe('SIMU1_3', 'XBAND', starttime='220s', stoptime='320s');
mysim.observe('SIMU1_4', 'XBAND', starttime='330s', stoptime='430s');
In this example, a 2x2 mosaic pattern is set centered around the direction
specified (dir0). The setmosaicfield name each mosaic field with i
sourcename+'_i', where i= 1..4.
Next: newsimulator.setspwindow - Function
Up: newsimulator - Tool
Previous: newsimulator.setfield - Function
 
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2006-10-15