GG030

PI: Giovannini
Title: Mkn 421

Session: Feb 1997 (session 1)
Frequency: 6 cm
Mode: B
Obs time (UT): EU 20:00(17/02)-05:30(18/02)
Obs time (UT): US 20:00(17/02)-05:30(18/02)
Stations: EbJbMcNtOnShSmTrUrWb
Processor: Bonn
EU Mk3 Tapes/St.: 2

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Experiment Feedback

JIVE (MARCO MORSIANI at Tue Feb 18 00:33:19 EST 1997) Success
WEATHER IS GOOD, CLEAR SKY

Medicina (GMaccaferri at Tue Feb 18 05:00:53 EST 1997) Success
All done!

JIVE (John Conway at Tue Feb 18 05:09:48 EST 1997) Failure
No observations, high 20m/s winds, antenna stowed for whole experiment. Wish we had Italian weather.

Onsala (John Conway at Tue Feb 18 05:10:30 EST 1997) Failure
No observations, high 20m/s winds, antenna stowed for whole experiment. Wish we had Italian weather.

Effelsberg (dgraham at Tue Feb 18 05:53:48 EST 1997) Minor failures
Late start at 2022

JIVE (Tony Foley at Tue Feb 18 10:13:23 EST 1997) Success
Looks OK

Torun (Roman Feiler at Wed Feb 19 18:40:34 EST 1997) Success
Fine weather, wind 5-8 m/s. Loose connections in BBC7 now fixed. <P><DT><STRONG>Jodrell</STRONG> (Alastair Gunn at Wed Feb 26 09:09:57 EST 1997) <EM>Failure</EM>
POLARISATIONS ARE CROSSED. Therefore no useful data. <P><DT><STRONG>Cambridge</STRONG> (Alastair Gunn at Wed Feb 26 09:12:29 EST 1997) <EM>Success</EM>
No known problems. Tapes NGS00192,16EF and MEDI3095,1620 sent to Bonn via Woodcroft on 24/02/97.

Shanghai (Huang Xinyong at Wed Mar 5 04:47:17 EST 1997) Minor failures
Clock offset = 0.05 msec. The power value is too small for every bbc in first scan. Weather fine.

Calibration (Fredrik T Rantakyro at Thu May 8 11:32:06 METDST 1997) Success
The ANTAB file for the experiment has been placed on VLBEER in the Feb97 directory with the name gg30.antab. This file contains the preliminary calibration results and may be updated when I receive updated information from the telescopes and the results from the datareduction of the calibration experiments.

MPIfR (Scott Aaron at Mon Jan 26 10:36:58 MET 1998) Minor failures
Correlation completed. Medicina showed a very low amplitude in the 3rd IF, so the data were not correlated. Very high residual rates and delays on long baselines for the target source. Frequent problems reading the Torun tapes.