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Astrid-1 and Astrid-2 were two microsatellites designed and developed by Swedish Space Corporation on behalf of the Swedish National Space Board. They were piggyback launched on a Cosmos-3M launch vehicle from Plesetsk, Russia. Astrid 1 on January 24, 1995 and Astrid 2 on December 10, 1998. == Astrid-1 == Sweden's first microsatellite was piggybacked with the launch of Tsikada, a Russian navigation satellite and FAISAT, a United States communications satellite. It carried an Energetic Neutral Atom imager called PIPPI (Prelude in Planetary Particle Imaging), an Electron Spectrometer called EMIL (Electron Measurements - In-situ and Lightweight) and two UV imagers called MIO (Miniature Imaging Optics), one for imaging the Earth's aurora and one for observing Lyman alpha-emission from the Earth's geocorona. This payload, named after characters in Astrid Lindgren's books (the idea came from a Russian scientist ), was developed by the Swedish Institute of Space Physics in Kiruna. On March 1, a DC to DC converter for the scientific instruments failed, possibly due to a short circuit, ending its scientific mission. However, the satellite remained in orbit until September 27, serving as a testbed for various software algorithms and store-and-forward communications. The entire satellite was built in a year and the cost, including launch, was 1.4 million U.S. dollars. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Astrid (satellite)」の詳細全文を読む スポンサード リンク
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