GV025

Session: Feb 2019 (session 1)

Wavelength: 6 cm

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Experiment Feedback

Badary (Lysakova, Semenova, Slepkova, Nekrasova at Tue Mar 05 06:05:50 2019) Success:

Hartebeesthoek (Jonathan Quick at Tue Mar 05 06:21:09 2019) Success:

No known problems.

Irbene (Roberts at Tue Mar 05 08:00:52 2019) Minor failures: HIGH ANT

High wind caused some technical antenna problems, therefore few scans were missed (from 0082 to 0088 during antenna stop ), Tsys increased (max 75K) during the rain from 4:00 UTC (05.03)

Yebes (Ruben Fernández at Tue Mar 05 08:03:18 2019) Success:

No known problems

Medicina (G.Maccaferri at Tue Mar 05 08:06:51 2019) Success:

Zelenchukskaya (Ptitcin A. at Tue Mar 05 08:13:59 2019) Success:

Svetloe (Baykova at Tue Mar 05 08:14:17 2019) Success:

Tianma65 (Bo Xia at Tue Mar 05 09:07:34 2019) Success:

Jodrell_Bank (Eskil Varenius at Tue Mar 05 09:21:53 2019) Minor failures: HIGH

High Tsys. In general a bit high since diode strength not yet reduced for continuous calibration. Also, the fact that diode response is nonlinear may also explain why some BBCs are significantly worse during all experiment. Finally, some really bad times outside UTrange 01-08, probably RFI. Will probably need flagging. Still, this was a test-participation for the Lovell - successful in the sense of finding issues. And data should be OK.

Cambridge (Eskil Varenius at Tue Mar 05 09:41:05 2019) Minor failures: FORM

eMERLIN participated with all stations; Cm, Da, De, Kn, Pi, Mk2. Kn may have had a timing glitch in the WIDAR fibre delay correction buffer, possibly affecting L/R pols differently, around 01:20 on March 5th. While all stations should have residual delays on the order of ns before that time, Kn may have a new constant mircosecond delay offset after the glitch. At correlation time, please do another clock search during second part for Kn to correct this offset.

Torun (Pawel Wolak at Tue Mar 05 14:07:55 2019) Success:

Urumqi (Li Guanghui at Tue Mar 05 23:31:53 2019) Success:

Effelsberg (Uwe Bach at Wed Mar 06 12:47:31 2019) Success:

Irbene (Roberts at Thu Mar 07 10:01:42 2019) Minor failures: HIGH ANT

High wind caused some technical antenna problems, therefore few scans were missed (from 0082 to 0088 during antenna stop ), Tsys increased (max 75K) during the rain from 4:00 UTC (05.03)

Onsala (Jun Yang at Fri Mar 08 10:00:49 2019) Success:

No known problems.

Westerbork (Blaauw at Tue Mar 12 15:11:13 2019) Success: