Title: 15 AGNs
Session: Oct 1996 (session 3)
Frequency: 1.3 cm
Obs time (UT): 293 EU 05:00(19/10)-05:00(20/10)
Obs time (UT): 293 US 05:00(19/10)-05:00(20/10)
EU Mk3 Tapes/St.: 2
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Metsahovi (Kirsi Karlamaa, Ari Mujunen, Kaj Wiik at Mon Oct 21 03:47:25 EDT 1996) Minor failures
Power outage at 293 09:52--10:15. Two suspicious head position
log lines at 293 07:13:1145/pass/10,,auto,-220.0,,54.7,,274.7, and
293 09:13:1139/pass/18,,auto,-110.0,,54.7,,164.7,. In both cases
the head position should have stayed the same, i.e. the FS
has probably not attempted to move the head but for some unknown
reason it gives a wrong LVDT readout (or the head really has moved
to a wrong position on its own...) Rainy weather. Tapes to
Socorro are being shipped today on Monday as agreed in TWG; Bonn
will follow on Tuesday tomorrow.
Effelsberg (D.Graham at Wed Oct 23 09:08:35 EDT 1996) Minor failures
The PI wrote his own Tsys procedures, to be used instead of
the standard ones. These did not work: now the PI has no Tsys
information at all. Otherwise uneventful.
Onsala (J.Conway, A. Polatidis at Thu Oct 24 07:22:26 EDT 1996) Minor failures
The Tsys and TPI procedures provided were not standard for Mark III. We have edited out both procedures and Tsys and TPI measurements are reliable after 1100 UT. Missed three scans between ~1100-1200 UT when correcting the Tsys/Tpi procedure. We also lost a scan at 151500-152800 due to an operator error. No other problems known. Rain during parts of the experiment.
Noto (Corrado Trigilio at Wed Oct 30 05:26:58 EST 1996) Minor failures
Tsys procedures have been previously edited (because we have a VLBA terminal) and checked, as required from the PI. They worked fine! At the beginning of many scans, the telescope was still slewing, so Tsys is done offsource.
Clear sky during the whole experiment.
Jodrell (Alastair Gunn at Thu Nov 7 06:27:26 EST 1996) Minor failures
PI supplied non-standard Tsys procedure which did not work so no
Tsys information was recorded. Due to staff shortages ay Jodrell
it is not possible for us to do detailed checks on all schedules
and procedures, particularly when complicated procedures are
required. PIs should ensure that non-standard procedures will
work or supply appropriate details for changes. Time allowed
for source changes was insufficient probably affecting ALL source
changes. Major problems with vacuum dropout on recorder. Scans
from 08:30 to 08:58 missed, scans from 10:00 to 10:30 missed,
scans from 11:00 to 11:15 missed all due to tape problem. Tape
MPIR0039 should be checked for wear! PI did not give adequate
slew times for Azimuth unwraps. Tapes MPIR1239 and MPIR0039
shipped on 21/10/96 to Socorro via DHL.