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: http://www.iki.rssi.ru/solar/eng/yohkoh.htm
Дата изменения: Thu Oct 16 01:00:42 1997 Дата индексирования: Tue Oct 2 05:15:45 2012 Кодировка: Поисковые слова: corona |
The objective of Yohkoh (Japanese for sunbeam) is to study the high-energy radiations from solar flares (hard and soft X-rays and energetic neutrons) as well as quiet structures and pre-flare conditions. The mission is a successor to Hinotori, a previous Japanese spacecraft flown at the previous solar activity maximum in 1981. Yohkoh was launched on August 30, 1991.
Yohkoh is a three-axis stabilized, observatory-type satellite in a nearly-circular Earth orbit. It carries four instruments: two imagers and two spectrometers. The imaging instruments have almost full-Sun fields of view, to avoid missing any flares on the visible disk of the Sun. American solar physicists at Lockheed Palo Alto Research Laboratory are collaborating in the soft X-ray telescope production and data analysis.
Approximately 50 MB of data are accumulated per day, and stored on an on-board tape recorder with 10.5 Mbyte capacity. The Yohkoh mission is a cooperative mission of Japan, the US, and England.