Pointing
The plots below show the entirety of pointing data for RxA & RxB in this period since the SMU adjustments on 15th July:

These combined data don't show off the new model and thermal corrections terribly well, it has to be said. The strongest systematic trend to be seen is of del-vs-el in the RxB data (central sub-panel) - and it might be seen - though weakly - in the RxA data.

The elevation collimations for RxA & B have adjusted by -7.5" (determined from a TPOINT analysis).

Thermal - i.e. analyses of the elevation residuals as functions of Receiver and antenna leg temperatures:

  FE  No.of data   fit                              Temp range
  --  ----------  ----------------------------     -----------
   A      46      del = ( 1.8  +- 1.6 )*T_diff     -0.6 to +1.0
                      = (-0.40 +- 0.16)*T_mean       1  to  10

   B     137      del = (-0.95 +- 0.50)*T_diff     -1.0 to +1.0
                      = (-0.02 +- 0.07)*T_mean       1  to  14

- which all looks good.

Focus

      FE  axis  No.obs.    mean   s.d.  Notes ('significant' trends)
                           (mm)   (mm)
    ----- ----  -------  ------- ------ -----------------------------
     RxA    Z      18     -0.02   0.08   
            X      16     -0.12   0.25   
            Y      17     +0.01   0.15

     RxB    Z      47     +0.06   0.10
            X      37     +0.15   0.25
            Y      37     +0.04   0.12

Notes

• temperature ranges covered +1 to 14
• No significant trends with elevation or temperature

The adjustments of last time seem to have worked well.

In general, the model and corrections are working OK, although the del-vs-el trend will need further monitoring. A model adjustment on the basis of serendipitously acquired heterodyne pointing data would be risky: and a full pointing run might be necessary if the model becomes too poor in this or any other regard.