[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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