The Alleghany Observatory Photometry Program

阿勒格尼天文台光度测量计划

• 批准号: 9014296
• 负责人: Michael Castelaz
• 金额: --
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-05-01 至 1991-08-01
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9014296&HistoricalAwards=false
• 关键词: Alleghany; Observatory; Photometry; Program

This award will implement a dual-channel chopping photometer for use on the completely renovated 0.76-m Keeler reflector at Allegheny Observatory. A dual-channel chopping photometer is ideally suited to the observatory's needs because the primary interest is in colors in their photometry program. Furthermore, observations of stellar colors are insensitive to the conditions of non-photometric weather, which is common at Allegheny Observatory. According to record books at Allegheny Observatory, there are an average of 120 nights per year which are suitable for dual-channel chopping photometry. Some astrometric target stars are variable; their light curves will be observed so that a search for any type of correlations between magnitude and astrometric position can be made. Photometric observations of stars in new astrometric regions will provide the astrometric program with an efficient method for choosing appropriate reference stars.

该合同将实现双通道斩波光度计，用于阿勒格尼天文台完全翻新的0.76米基勒反射器。双通道斩波光度计非常适合天文台的需要，因为主要兴趣是在测光程序中的颜色。此外，对恒星颜色的观测对非光度天气条件不敏感，这在阿勒格尼天文台很常见。根据阿勒格尼天文台的记录，每年平均有120个夜晚适合进行双通道切波测光。一些天体测量的目标恒星是可变的；它们的光曲线将被观察到，这样就可以寻找星等和天体测量位置之间的任何类型的相关性。在新的天体测量区域对恒星进行光度观测，将为天体测量计划提供一种选择合适参考恒星的有效方法。