[evlatests] AK634 last evening

[Barry Clark]

I'm mildly surprised it worked at all.  I had carefully not excluded 
FS durations not multiples of 10s, but had never tested it.  Untested 
things tend, in fact, not to work.  Durations not a multiple of 1.25 
seconds (the command cycle time to VLA antennas) may cause trouble, and, 
as Ken said, durations not a multiple of the integration time may cause 
trouble.  Somebody could check for reasonableness, if we knew what was 
reasonable.


> From evlatests-bounces at donar.cv.nrao.edu  Fri Jul 13 10:52:08 2007
> From: Mark Claussen <mclausse at nrao.edu>
> To: evlatests at aoc.nrao.edu
> Date: Fri, 13 Jul 2007 10:51:39 -0600
> 
> Vanilla X band continuum.  fast switching, with durations 45 168
> and 5 second records.   Obs file ak634.b.a.b.obs.   I asked Ken
> and Bryan about the fast switching times being multiples of 10s,
> post modcomp observations.   They both suggested that multiples
> of 10s were not necessary, but that the durations should be multiples
> of the integration/dump time.   Not the case here.  We should tell users
> (I'm suprised that the durations are not multiples of 10s, as we advertise
> they should be.)
> 
> In any case, the data look fine.  Only problem, as noted in the log,
> was that 0137+331 was not above the el limit at the time of its observation,
> and so there were no fringes during that time (data was not flagged for
> any antenna ---- should it be ?).
> 
> Mark
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