SSSC19_WSRT.MS

SSSC19_WSRT.MS


An off-centre source further afield

Logged on 07/06/2009 06:04:59 PM

Here we are performing a simulation akin to SSSC16 but with the off-centre source further away from the phase centre, in this case the separation is 8 minutes in Right Ascension and 2 degrees in Declination.

Examine the LSM file below for confirmation of this.

Data products

SSSC19_WSRT.lsm

SSSC19_WSRT.ann

.tdl.conf


Writing the visibilities and making an image

Logged on 07/06/2009 06:11:10 PM

Examine the compile time options in the data products below if you want to remind yourself of what we're up to.

1) Using a text file to describe our sky model in "h m s / d m s" format

2) Exporting an annotation file compatible with kvis

3) Applying a G-Jones corruption which applies a periodic varitaion to the elelctronic receiver gains

...and that's it, things are still pretty simple here.

Hitting 'Compile' will build the tree, and subsequently hitting 'Simulate MS' will write the visibilities to the DATA column if that's the one we've selected.

One thing we will have to change from our previous simulations is the imaging options. If we use the ones we've been using up until this point then we won't see the source.

Set the image size to 360 arcminutes (6 degrees) and the number of pixels to 2048 (or more, if you like).

Consult the imaging_options PNG in the data products below.

Data products

SSSC19_compile_time_options.png

SSSC19_compile_time_options.png

SSSC19_imaging_options.png

SSSC19_imaging_options.png

SSSC19_WSRT.MS.DATA.channel.1ch-1.fits (header)

0-full.png0-hist-full.png
0-hist-zoom.png
data range:-0.179583,4.44336
size:1x1x2048x2048
mean:5.81633e-06
sigma:0.0322534
clipping:95%
clip range:-0.0622035,0.0596905

This log was generated by PURR version 1.0.