{"title":"星载单口径天文望远镜的几何光线追踪计算","authors":"A. Buffington, E. Mendoza","doi":"10.1364/soa.1988.wb14","DOIUrl":null,"url":null,"abstract":"A 1.5 m telescope in space could achieve unprecedented differential astrometric precision, using essentially present-day technology. A Ronchi ruling in the prime focal plane moves over the images, and photoelectric detectors view the modulated starlight to determine angles between the target and reference stars within a 5 arcminute radius. A 10 microarcsecond precision can be achieved, after about an hour s integration time, for 13th magnitude targets. Such a telescope, operating over 20 years, could detect planets around nearby stars, and make major contributions to other stellar and galactic problems (Levy et al. 1986, 1987).","PeriodicalId":184695,"journal":{"name":"Space Optics for Astrophysics and Earth and Planetary Remote Sensing","volume":"7 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Geometrical Ray-Tracing Calculations for a Space-Borne, Single-Aperture Astrometric Telescope Facility\",\"authors\":\"A. Buffington, E. Mendoza\",\"doi\":\"10.1364/soa.1988.wb14\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A 1.5 m telescope in space could achieve unprecedented differential astrometric precision, using essentially present-day technology. A Ronchi ruling in the prime focal plane moves over the images, and photoelectric detectors view the modulated starlight to determine angles between the target and reference stars within a 5 arcminute radius. A 10 microarcsecond precision can be achieved, after about an hour s integration time, for 13th magnitude targets. Such a telescope, operating over 20 years, could detect planets around nearby stars, and make major contributions to other stellar and galactic problems (Levy et al. 1986, 1987).\",\"PeriodicalId\":184695,\"journal\":{\"name\":\"Space Optics for Astrophysics and Earth and Planetary Remote Sensing\",\"volume\":\"7 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1900-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Space Optics for Astrophysics and Earth and Planetary Remote Sensing\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1364/soa.1988.wb14\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Space Optics for Astrophysics and Earth and Planetary Remote Sensing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1364/soa.1988.wb14","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
在太空中,一台1.5米的望远镜可以实现前所未有的差分天文测量精度,使用的基本上是现代技术。在主焦平面上的Ronchi标尺在图像上移动,光电探测器观察调制的星光,以确定目标恒星和参考恒星之间的角度,半径为5弧分。对于13级目标,经过大约1小时的积分时间,可以达到10微弧秒的精度。这样的望远镜运行了20多年,可以探测到附近恒星周围的行星,并对其他恒星和星系问题做出了重大贡献(Levy et al. 1986, 1987)。
Geometrical Ray-Tracing Calculations for a Space-Borne, Single-Aperture Astrometric Telescope Facility
A 1.5 m telescope in space could achieve unprecedented differential astrometric precision, using essentially present-day technology. A Ronchi ruling in the prime focal plane moves over the images, and photoelectric detectors view the modulated starlight to determine angles between the target and reference stars within a 5 arcminute radius. A 10 microarcsecond precision can be achieved, after about an hour s integration time, for 13th magnitude targets. Such a telescope, operating over 20 years, could detect planets around nearby stars, and make major contributions to other stellar and galactic problems (Levy et al. 1986, 1987).