[daip] quick question

[Eric Greisen]

Laura Chomiuk wrote:
> Hi Eric,
> 	I'm sorry to miss your science tea today, but i don't think the
> tea room is equipped with videocon! I've been messing with RFLAG some and
> plan to experiment with it more today. Do you typically run RFLAG three
> separate times: once on your (faint) science target, once on your gain
> cal, and once on the bright flux cal?
> 
> I have another question for you too: Every time i get a new data set,
> i want to time average it and hanning smooth it (with the same task,
> preferably). Which is the better task to use: UVAVG or SPLAT? These two
> tasks seem to time average quite differently. Or maybe there is some other
> task that is even better?
> 		Thanks!
> 			Laura
> 
> 
RFLAG is a new task so the right thing to do is not so obvious.  I would 
run it on the strong cal to plot only and then on the target and see if 
the clipping level suggestions are significantly different (adverbs 
noise and SCUTOFF - which change each time you run with doplot > 0).
Another way they might differ is STOKES='RRLL' vs STOKES='RLLR' - again 
worth testing to see if they differ.  If the suggestions are 
significantly different then one would need multiple executions. 
Otherwise not.

The time averaging in SPLAT is the same as one of the methods in UVAVG 
with the interval set by the first time it sees and the mean time for 
each baseline different.  UVAVG gives you other options which make later 
time gridding things happier.  But UVAVG does not do SMOOTH and you want 
to do that once and for all and then leave SMOOTH=0 thereafter.

Is there some other difference in SPLAT vs UVAVG that I am unaware of?
Do we need more options somewhere?

I would send my powerpoint but there is little there for you that you 
have not already seen (no real talk just plots and inputs).  Do not 
forget REFLG afterwards.  Perhaps you should check the latest Appendix E 
for a revised sequence of things...

Cheers,

Eric