Serendipity and the Utlization of the Spacelab Imaging Spectrometric Observatory as a Test Class-A Spectroscopy Facility for CEDAR

美国宇航局太空实验室飞行仪器可用于地面 由于延迟提交报告， 挑战者号事故造成的航班延误 是 建议操作这套高度复杂的 麦克唐纳的带有增强型CCD探测器的摄谱仪 天文台，直到1988年6月，以获得光谱的上层 黄昏时的大气排放。 光谱将用于 一个热层光化学模式的反演， 试图推断出的成分和温度的变化 一天到一天的热层， CEDAR项目。 年的热层组成和温度变化 对极光区能量输入的响应， 地球仪，并改变太阳紫外线通量的季节性和 太阳周期基础目前，成分变化只能是 由航天器现场观测确定。PI两者都有 观察和理论背景，充分利用 一旦获得的数据，并提供输入的高层大气 社区然后，他们将能够设计最佳的观测 CEDAR的程序和仪器配置， 协调多站大气成分变化 竞选

A NASA Spacelab flight instrument is available for ground based observations for a period of a year owing to the delays in flight schedules caused by the Challenger accident. It is proposed to operate this highly sophisticated set of spectrographs with intensified CCD detectors at McDonald Observatory until June 1988, to obtain spectra of upper atmosphere emissions in twilight. The spectra would be used in the inversion of a thermospheric photochemistry model in an attempt to deduce changes in the composition and temperature of the thermosphere on a day to day basis, in conformity with a CEDAR project. The thermospheric composition and temperature change in response to auroral zone energy inputs which propagate over the globe, and to changing solar ultraviolet fluxes on a seasonal and solar cycle basis. Currently the composition changes can only be determined by in-situ spacecraft observations. The PI has both the observational and the theoretical background to make full use of the data once obtained, and to provide input to the aeronomy community. They will then be able to design the optimum observing program and instrumental configuration for CEDAR to determine atmospheric composition changes in coordinated multistation campaigns.