<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" ?>
<casaxml xmlns="http://casa.nrao.edu/schema/psetTypes.html"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://casa.nrao.edu/schema/casa.xsd
file:///opt/casa/code/xmlcasa/xml/casa.xsd">
<task type="function" name="fixplanets" category="editing, maninpulation, calibration" >
<shortdescription>Changes FIELD and SOURCE table entries based on user-provided direction or POINTING table, optionally fixes the UVW coordinates</shortdescription>
This task's main purpose is to correct observations which were performed
with correct pointing and correlation but for which incorrect direction
information was entered in the FIELD and SOURCE table of the MS.
If you actually want to change the phase center of the visibilties in an MS,
you should use task fixvis.
vis -- Name of the input visibility set
field -- field selection string
fixuvw -- recalc uvw coordinates? (default: False)
direction -- if set, don't use pointing table but set direction to this value.
The direction can either be given explicitly or as the path
to a JPL Horizons ephemeris (for an example of the format,
see directory data/ephemerides/JPL-Horizons/).
Alternatively, the ephemeris table can also be provided as mime format file,
i.e. a saved email as obtained via the commands (for example):
import recipes.ephemerides.request as jplreq
jplreq.request_from_JPL(objnam='Mars',startdate='2012-01-01',enddate='2013-12-31',
date_incr='0.1 d', get_axis_orientation=False, get_axis_ang_orientation=True,
get_sub_long=True, use_apparent=False, get_sep=False,
return_address='YOUR_EMAIL_ADDESS', mailserver='YOUR_MAIL_SERVER_ADDRESS')
Note: some mail clients may not save the JPL mail properly.
Confirmed to work is Thunderbird.
default= '' (use pointing table)
example: 'J2000 19h30m00 -40d00m00'
refant -- if using pointing table information, use it from this antenna
default: 0 (antenna id 0)
examples: 'DV06' (antenna with name DV06)
reftime -- if using pointing table information, use it from this timestamp
examples: 'median' will use the median timestamp for the given field
using only the unflagged maintable rows
'2012/07/11/08:41:32' will use the given timestamp (must be
within the observaton time)
<param type="string" name="vis" kind="ms" mustexist="true">
<description>Name of the input visibility set.</description>
<example>vis='ngc5921.ms'</example>