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Gerhard Kronschnabl and Alexander Neidhardt - 24 Feb 2016
HartRAO
Current status: Civil works have been completed with the last of the painting finished in April. The first batch of containers have arrived from China and Germany this last week (19 and 20 April). The azimuth and elevation cabin is expected to arrive on site in the first week of May.At the moment the assembly team from CETC54 and MT Mechatronics are on site and the assembly work will take place during the next 3 months. Panel alignment is underway (last results were around 90 microns).
Commissioning tests are to be started in the beginning of August.
We have a live camera feed up and running (updated every minute) which can be accessed at: http://www.hartrao.ac.za/xxvgs_liveview.php
Photos from HartRAO VGOS site (21 April 14 July 2017)
For updated videos and photos please visitCurrently there is a camera installed on site, however there is no network connectivity yet. For updated videos and photos please visit (I have unfortunately not had time to update these photos and videos recently though we are working towards getting a live stream feed operational within the next month - before the big lift):
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Philip Mey - 21 Apr July 2017
Ishioka
- Operation of Ishioka antenna is now under interruption because of construction of operation building, and will resume after April.
- Modification of cryogenic dewar for QRFH system is being done.
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Jim Lovell - 26 May 2016
Kashima 34m
- We are working for exchanging replaced 1.6m dish with 2.4m Cassegrain optics of MARBLE1 station at NMIJ(Tsukuba) .in March. Now we have two 2.4m dish at NICT(Koganei in Tokyo) and NMIJ( Tsukuba)
Marble1
(Tsukuba)Marble2
(Koganei)
- Broadband Broadband observation sessions conducted in 2016 were performed with 2048Msps-1bit-4ch mode. Frequency array was:
Lower_edge ( Center Freq)=
3188MHz(3700), 4788MHz(5300), 9588MHz(10100), 12788MHz(13300)
5388MHz(5900), 6588MHz(7100), 8188MHz(8700), 10088MHz(10600)
3288MHz(3800), 5388MHz(5900), 8188MHz(8700), 10088MHz(10600) - If any station can do broadband fringe test observation (1GHz bandwidth for single channel), we are pleased to be a counterpart of the experiment. We will make correlation and provide the results. Frequency array can be arranged flexibly.
- Comments on Broadband Observation.
- Broadband Data acquisition has advantage in tolerance to RFI. It is preferable to be broadband at the stage on analog/digital conversion.
- I prepared a stuff on RFI for TOW meeting at Haystack. It tells our status of receiving signal and RFI conditions.
- URL: http://www2.nict.go.jp/sts/stmg/ivstdc/siryou/2017/IVS-TOW/RFI-TOW2017sekido.pdf
Mamoru Sekido - 26 AprMamoru Sekido - 23 Mar. 2017
Yebes
We are taking part in the biweekly 24 hour VGOS tests. For those observations we use 4 RDBE-G units, 500 MHz bandwidth each band and polarization. We do not plan to make any hardware update in the near term. Our next mid-term goal is installing a combination of filters that will filter out frequencies below 3 GHz but will allow the passage of the legacy S band. That should allow us to install two amplifiers per polarization and not saturate the optical fiber amplifiers.
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