[daip] integration time

[Eric Greisen]

 > First, I just realized that I do need to know the integration time exactly, not for 
 > self cal but for griding during flagging.

    You do not need to know this - there is a single time recorded
with the data and you flag that time not a single-record time range.
PRTUV will show you the usual time differences if you need to flag
more than one and TVFLG etc will handle things just fine.

 > 
 > However don't you need to know the integration time in order to determine the 
 > weights? Is it possible to derive the integration time from the weights?
 
        FILLM and the VLBA correlator do know the integration times
and weights are set using them.  The apparent Tsys varies by a factor
of 3 or so between correlators so the weights do not directly tell you
the integration time.

Why are you so hung up on a parameter we do not find useful even when
the data set is very mixed (space VLBI)?

Eric Greisen
 > 
 > -- Kristy
 > 
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