Difference between revisions of "2016 December"

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(Dec 01)
(Dec 03)
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== Dec 03 ==
 
== Dec 03 ==
'''12:04 UT''' Another attempt is underway to do pointing measurements.  Early in the observations, it was discovered that the GPS clock had lost connection, which caused many subsystems to get confused.  By about 01:30 UT the system had been brought back into service, and data-taking had started.  Ant 12 is missing, because of a possibly spurious Lo Hard Limit in Azimuth (the current Azimuth is reading high, not low...). Also, overnight there have been many episodes of high wind, so many of the scans will be useless.  Right now I count 9 potentially good scans.  I also found the tunable LO saying "Queue Overrun," so tuning on band14 may not have been correct for awhile--not sure when this occurred.
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'''12:04 UT''' Another attempt is underway to do pointing measurements.  Early in the observations, it was discovered that the GPS clock had lost connection, which caused many subsystems to get confused.  By about 01:30 UT the system had been brought back into service, and data-taking had started.  Ant 12 is missing, because of a possibly spurious ''Lo Hard Limit'' in Azimuth (the current Azimuth is reading high, not low...). Also, overnight there have been many episodes of high wind, so many of the scans will be useless.  Right now I count 9 potentially good scans.  I also found the tunable LO saying ''Queue Overrun'', so tuning on band14 may not have been correct for awhile--not sure when this occurred.

Revision as of 12:16, 3 December 2016

Dec 01

12:52 UT For the past several days we have done normal solar observing, with some interruptions due to testing new fast-correlator designs. The latter is showing improvement, but still some issues to resolve. During the solar observations, there have been a few small events. One M1-class flare occurred, but had almost no radio emission apparently. Activity seems to be subsiding now.

Dec 02

15:00 UT We made an attempt last night to do pointing measurements on Ant 14, but there were several problems. The tunable LO was not switching, but mainly Ant 14 was not in the subarray! After this was fixed, the wind was high, so observations were terminated early. None of the observations will be useful. We will proceed with normal solar observing.

Dec 03

12:04 UT Another attempt is underway to do pointing measurements. Early in the observations, it was discovered that the GPS clock had lost connection, which caused many subsystems to get confused. By about 01:30 UT the system had been brought back into service, and data-taking had started. Ant 12 is missing, because of a possibly spurious Lo Hard Limit in Azimuth (the current Azimuth is reading high, not low...). Also, overnight there have been many episodes of high wind, so many of the scans will be useless. Right now I count 9 potentially good scans. I also found the tunable LO saying Queue Overrun, so tuning on band14 may not have been correct for awhile--not sure when this occurred.