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1983年1月26日,一枚德尔他3910火箭从范登堡基地升上天空,把一颗重一吨多的卫星射入预定轨道——900公里高的近极地轨道,卫星运行周期为103分钟,此卫星便是荷兰红外天文卫星IRAS。 IRAS卫星计划是荷兰、美国和英国合作计划,卫星重1076公斤,其中平台266公斤,主要仪器——红外望远镜810公斤。卫星的主要任务是观测宇宙红外源并为它们编制目录,同时对某些红外源进行详细研究。目前,卫星的一切工作正常。由于星上所带的探测器致冷用液氦的散发速度比预计的慢,因而卫星寿命可能由原计划的200天延长到250天甚至可能达到300天。另外,星
On January 26, 1983, a Deltas 3910 rocket launched from the Vandenberg base to the sky and launched a satellite weighing more than a ton into a predetermined orbit - a 900-km high polar orbit - with a satellite operating period of 103 Minute, this satellite is the Netherlands infrared astronomy satellite IRAS. The IRAS satellite program is a partnership between the Netherlands, the United States and the United Kingdom. The satellite weighs 1,076 kilograms, of which 266 kilos are on the platform and 810 kilos for the main instrument, the infrared telescope. The main mission of the satellites is to observe and catalog the cosmic infrared sources and conduct a detailed study of certain infrared sources. At present, everything about the satellite is working fine. Due to the slower-than-expected release of liquid helium from detector cooling onboard the satellite, life expectancy may have been extended from its original 200 days to 250 days or perhaps 300 days. In addition, the star