[evlatests] New Gain curves ready...

[Rick Perley]

    The 'gain curves' run of last Friday night has produced excellent 
results, particularly at the higher frequencies, where the antenna gain 
function is strongest.  New coefficients (normalized to the zenith -- 
only for convenience) have been determined, and will be circulated later 
today.  (There are a couple of checks that I'd like to do to ensure the 
results are of the highest quality). 
    As expected some antennas are anomalous (ea15 and ea18 in 
particular, but some others as well).  A complete list will be 
circulated later.   And, for some antennas and IFs, particularly at the 
lower frequencies, there are clearly other elevation-dependent effects 
which dominate the antenna gain function.  Again, I'll summarize all 
this in a later circular. 

    To emphasize just how well we can point (admittedly, under ideal 
conditions) -- the post-fit rms at Q-band, for most antennas, is between 
3 and 4 arcseconds.