[evlatests] Ku-band holography tests

[Rick Perley]

    In preparation for the weekend Ku-band holography, we did a test run 
of the holography scripts prepared by Michiel. 
    Eighteen antennas are now working well at Ku-band!  Amplitude and 
phase stability look extremely good. 

    There is a large delay error for ea11, in IFs A and C only.  (-30 
nsec for both).   All others look fine.
    There is evidence of a significant collimation error for ea01 (from 
the holography scans) -- this is not a big deal, but if it could be 
found and corrected, that would be useful. 

    In the light of Vivek's finding of bandpass instability, I checked 
the BP solutions with BPLOT.  For these Ku-band data, all look 
excellent, with changes (on timescales of 30 minutes) less than 1%.  The 
calibrator scans were short, so SNR was not high, however. 

    We're ready to do the dish surveys this weekend. 

    Rick