CEDAR: Spectroscopic Studies in Aeronomy Using Advanced Interferometric Techniques

本研究继续努力将先进的干涉光谱方法应用于高层大气研究。 该研究强调了利用双标准具和三标准具系统的CCD探测器的灵敏度提高的应用。 这些测量包括地冠Balmer-alpha夜辉和（OI）6300日辉测量。 一个主要目标是充分验证我们的白天天空测量。 该系统将被转移到位于马萨诸塞州Millstone Hill的光学设施，在那里，测量结果将被定期协调，并与其他光学和雷达测量结果进行比较。 计划进行的其他测量将扩大地冠巴尔默-阿尔法强度测量的长基线，以研究太阳周期变化和预测的低层大气甲烷积累造成的外逸层氢的变化。

This research continues efforts to apply advanced interference spectroscopic methods for studies in aeronomy. The study emphasizes applications that take advantage of the improved sensitivity of a CCD detector with double and triple etalon systems. These include geocoronal Balmer-alpha nightglow and (OI)6300 dayglow measurements. A primary goal is the full validation of our daysky measurements. The system will be moved to the optical facility at Millstone Hill in Massachusetts where measurements will routinely be coordinated and compared with other optical and radar measurements. Other measurements planned will extend the long baseline of geocoronal Balmer-alpha intensity measurements for the purpose of studying solar cycle variations and the predicted variation of exospheric hydrogen with lower atmosphere methane buildup.