MeerKAT antenna table

[Gerry Harp]

Hi

Has anyone put together an antenna table (a la uvgen) for the 64 antennas of MeerKAT? I'd be grateful if you could share it with me.

Thanks

Gerry

[Peter Teuben]

I thought I saw one in casa. 

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[melvyn wright]

Hi Gerry,

Maybe here

https://github.com/SpheMakh/uvgen

Mel.

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[Peter Teuben]

On 05/03/2018 12:56 PM, Peter Teuben wrote:

yes, in $CASAROOT/data/alma/simmos/meerkat.cfg I see 80  12m ants


# observatory=MeerKAT
# coordsys=LOC (local tangent plane)
# x y z diam
  176.061   170.880  0.0   12.0  
 -130.841    61.884  0.0   12.0  
  -66.969  -606.976  0.0   12.0    
...
-1208.553 -3073.213  0.0   12.0                   
 -980.743  -560.740  0.0   12.0  
  169.497   242.840  0.0   12.0  

[melvyn wright]

Hi Peter,

what are the x y z  =  East, North, Elev ?

and units in meters ?

Mel.

On Thu, May 3, 2018 at 10:13 AM, Peter Teuben <teu...@astro.umd.edu> wrote:

On 05/03/2018 12:56 PM, Peter Teuben wrote:

yes, in $CASAROOT/data/alma/simmos/meerkat.cfg I see 80  12m ants


# observatory=MeerKAT
# coordsys=LOC (local tangent plane)
# x y z diam
  176.061   170.880  0.0   12.0  
 -130.841    61.884  0.0   12.0  
  -66.969  -606.976  0.0   12.0    
...
-1208.553 -3073.213  0.0   12.0                   
 -980.743  -560.740  0.0   12.0  
  169.497   242.840  0.0   12.0  

I thought I saw one in casa. 

On Thu, May 3, 2018, 12:27 Gerry Harp <gerr...@gmail.com> wrote:

Hi

Has anyone put together an antenna table (a la uvgen) for the 64 antennas of MeerKAT? I'd be grateful if you could share it with me.

Thanks

Gerry

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[Peter Teuben]

ENU yes, which is XYZ, and i'm pretty sure it's meters.  The dish size is. Not sure about meerkat dishes,
your link showed 13.5m dishes, casa uses 12m.

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[melvyn wright]

Hi Peter, Gerry,

I  made a meerkat.ant file from meerkat.cfg and ran the miriad script mfs.csh to generate uvcoverage, beams and analysis

in beams.results for snapshot and 3h HA coverage. Files in

http://w.astro.berkeley.edu/~wright/meerkat

Our installed miriad has MAXANT=64,  so I used the first 64 antenna positions  in file  meekat64.ant

compile miriad with MAXANT=100 ( or more) to use all meerkat antenna positions, but I don't know

how many antennas they actually have !

cheers,

Melvyn

[Peter Teuben]

http://public.ska.ac.za/meerkat/meerkat-schedule

only lists 64 antenna.  This file also lists 64:

https://github.com/radio-astro/simms/blob/master/simms/observatories/meerkat.itrf.txt
but it seems the positions are out of date, i've been told.   See also the issue tracker
here:

https://github.com/SpheMakh/uvgen/issues/1

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[melvyn wright]

Hi Peter,

 Please send if someone makes an better meerkat.ant for 64 antennas - possibly in build order to it's easy to use

subsets as the array is built.

Thanks,

Melvyn

[Peter Teuben]

the last column in their table has the build order:

http://public.ska.ac.za/meerkat/meerkat-schedule

but it looks like many are not built. Seems it has 32 now.

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[melvyn wright]

Hi Peter,

yes, I saw that, and was going to make a meerkat32.ant, but failed to download as ascii file !

Mel.😕

[Gerry Harp]

Hi Mel

Thanks. I thought that there was going to be exactly 64 antennas, total. But I might be out of date.

Gerry

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