Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.asc.rssi.ru/RadioAstron/news/newsl/en/newsl_05_en.pdf Дата изменения: Thu Nov 3 16:18:49 2011 Дата индексирования: Tue Oct 2 00:05:36 2012 Кодировка: Поисковые слова: storm

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================ stron Newsletter 5 ber 16, 2011 ================ n version of the Newsletter can be found here: /www.asc.rssi.ru/radioastron/newsletter/newsl_rus.pdf

Spectr-R in-orbit tests continue M w S s h I h i d i a t T p w t w P o i any things have happened since the previous Newsletter hich reported on the space radio telescope deployment. cience payload and survice systems of Spectr-R were uccessfully turned on. Technical details can be found here : ttp://www.asc.rssi.ru/radioastron/news/news.html n particular: The H-maser (atomic clock) was turned on and internal test as shown that the clock works properly, its stability s reported to be within the specs. Tests of "VIRK", the system which includes high-gain 1.5-m iameter antennae and is used to contact with the tracking st ation n Pushchino, continue. The so-called "open loop", the tone signal t 8 GHz, was successfully detected in Pushchino and is being used o perform Doppler measurements of the orbit parameters. he 15 GHz tone signal was also successfully detected. Today, the first system temperature measurements were erformed for the Australian-made 18 cm astronomical receiver hile the space telescope was pointed on a cold sky; he system temperature is estimated to be about 42 K hich is close to receiver's specifications. lans for the near future: VIRK pointing correction measurements and 15 GHz data link tests, performance measurements for all the other astronomical r eceivers f the 92, 6, and 1.3 cm bands, Cassiopea A first light single-dish radio astronomical ob servations ncluding space radio telescope efficiency measurements.

With best regards, Nikolai Kardashev (nkardash@asc.rssi.ru) Yuri Kovalev (yyk@asc.rssi.ru)


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