From: <John.Dickey_at_email.protected>
Date: Fri, 05 Mar 2010 08:30:40 +1100

Dear Richard,

    That is odd behavior. But I only have one plot, did you attach
more? The one I got is 4.2 Mby, a bit much for just 25 or 30 points
to display. There seem to be frequent jumps from low rate to high
rate, but both are pretty consistent. A wrap problem is possible, but
we just replaced all the cables, all the way from the receivers to the
control room.

    Anyway, if there were more figures in your mail, could you please
compress them and resend? Thanks for your help.

cheers,
jd

On 05/03/2010, at 2:00 AM, Richard Dodson wrote:

>Hi Tassie-siders
>
>You must tremble every time I get some data. Here is something from
>VX014B which _might_ help with the Ceduna problems.
>
>After a few steps to remove basic instrument offsets I get these
>residuals.
>
>See how Ceduna has a high rate about 1/2 the time? (page 1, PL 4).
>I thought at first that a source must have a very bad position, or
>that the antenna position must be bad and only sensitive to some
>source coordinates.
>
>But compare that to Ceduna (and everyone else) plotted against
>Hour Angle. When HA is negative rates are low. When HA is positive
>rates are high. (page 2 PL 2, page 3 PL 3).
>
>Odd behaviour at Ceduna - Who would have believed it?
>
>I am guessing that what we see here is a change of rate when the
>wrap changes, which I guess means that something is getting stretched,
>but I don't see what that would introduce a rate change.
>
>Phases are fine pre-HA=0, all over the shop post HA=0. (page 4, PL 5
>for amplitude RMS, page 5 PL 7 for phases).
>
>
>Have fun with this info!
>
>Richard
><CEDUNA_ODD.PS>
Received on 2010-03-05 08:31:09