[evlatests] AM889 on Aug 4 and 5

Ed Fomalont efomalon at nrao.edu
Tue Aug 7 17:40:08 EDT 2007


AM889 on Aug 04

OBSERVATION IS OKAY.  NO NEED TO REDO


1.4 GHz, 2 IFs, 2 Pols usual deep field correlator setup,
4 hour experiment, 3.3sec integration

antennas:
    11, 25 out; :  26 antennas working, 2 IFs, 2 Pols


No interference, a few high outliers.

NO QUACKING NECESSARY!!

Last 10 sec integration low at end of observation.

          
=========================================================================

AM889 on Aug 05

OBSERVATION IS OKAY.  NO NEED TO REDO


1.4 GHz, 2 IFs, 2 Pols usual deep field correlator setup,
4 hour experiment, 3.3sec integration

antennas:
    25 out;  27! antennas working, 2 IFs, 2 Pols
    11 in, a bit unstable, but still useful

A few very short bursts of interference, and low level
  interference between 15:41 to 15:53

no quacking necessary.

QUESTION:  WHY DOES THE PHASE FOR ANTENNA 14 FOR FIRST ~20 MIN
DRIFT OVER 100 DEG??  THIS HAS HAPPENED ON EVERY ONE OF THESE
AM889 OBSERVATIONS.  ALSO, A HINT OF EXTRA PHASE DRIFT NEAR
THE END OF THE EXPERIMENT.  ALL OTHER TELESCOPES ARE WELL-BEHAVED.





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