[evlatests] R/L phase differences.

Rick Perley rperley at nrao.edu
Thu Apr 23 17:56:06 EDT 2009


Bob's plot doesn't show the antennas, but the HA was +2 to +3, and dec = 
+74. 

The 7 antennas utilized were at:

24   W32
21   E32
2   E20
3   E16
28   N8
9   E24
15   W24

    If Bob sends me the relevant antenna pair, I can read off the (u,v,w). 
    It might be useful to plot 3 x 28 -- the shortest baseline ...


Barry Clark wrote:
> Bob's plot is not incompatible with delay cogging.  Delay moves
> in steps of 0.625 ns or about 6 degrees.  What was the baseline
> and hour angle?  Typical B config gaselines are of order 20
> microsecs, so a delay step should occur a couple of times a
> second, depending on baseline and HA.  This scatter is much
> smaller than what the scatter diagram on V appeared to show.
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