[daip] CLCOR and the ATLBA

[Sean Dougherty]

Eric,

I have recently been trying to calibrate a test VLBI experiment with the
ATLBA using the Swinburne software correlator. Unfortunately, there was
an error in the position of one of the antennas used in the array and
running CLCOR was required to fix the problem. The ATLBA has a
left-handed coord system and uses Greenwich meridian. Using the
supposedly correct values for CLCORPRM(4)=0 (for LH) and CLCORPRM(7)=0
(for Greenwich) according to the help files did not produce the
satisfactory solutions for delay, rate and phase as expected.

After exploring a number of potential solutions (none of which worked)
in conjunction with Ed Fomalont (NRAO) and Adam Deller and Chris
Phillips in Australia, a close examination of the aips code for CLOCOR
shows that when the array is 'ATLBA' that it is NOT possible to use
these values for the ATLBA. The code is written such that VLA, ATCA and
ATLBA are hardwired to be RH and use local meridian (!&*@^#%$).

Any chance of modfying the CLCOR code so that it works correctly?

Cheers,
Sean