Optical Gravitational Lensing Experiment

光学引力透镜实验

• 批准号: 0204908
• 负责人: Bohdan Paczynski
• 金额: --
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-07-01 至 2006-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0204908&HistoricalAwards=false
• 关键词: Optical; Gravitational; Lensing; Experiment

AST-0204908Paczynski, BohdanThe Optical Gravitational Lensing Experiment (OGLE) has undergone a major upgrade from a 2000 x 2000 CCD camera (OGLE-II) to a mosaic 8000 x 8000 CCD camera (OGLE-III). The new systembecame operational in the summer 2001, and it is expected to be fully streamlined, with a real time detection of microlensing events, by 2002. The 1.3 meter OGLE telescope is located at the Las Campanas Observatory in Chile. With the OGLE-II, Dr. Paczynski and his colleagues were detecting about 170 microlensing events per year. With the OGLE-III and new software, they expect to detect up to 1,000 events per year. This high rate virtually guarantees a detection of Jupiter mass planets and stellar mass blackholes. The same data will be searched for planetary transits. Almost all OGLE-II data (1997-2000) are now available on WWW and on DAT, in a highlycompressed format: 1 Terra Byte of original CCD images has been reduced to less than 10 GB.The archive includes high signal-to-noise images of about 16 square degrees in the Galactic Bulge, the Large Magellanic Cloud (LMC), and the Small Magellanic Cloud (SMC), and the photometry of about 30 million non-variable stars. The AC archive has 300 - 400 data points for about 250 thousand variable stars. The group expects to make the photometry of about one million variable stars detected by OGLE-III available on-line, first within 24 hours, and some time later within 10 minutes of taking CCD images. OGLE data will be used to study the structure of our Galaxy, the structure of the LMC and SMC, as well as to determine ever more accurate distance scale.***

光学引力透镜实验（OGLE）经历了从2000 × 2000 CCD相机（OGLE- ii）到马赛克8000 × 8000 CCD相机（OGLE- iii）的重大升级。新系统在2001年夏天开始运作，预计到2002年将完全精简，能够实时探测微透镜事件。1.3米的OGLE望远镜位于智利的拉斯坎帕纳斯天文台。利用OGLE-II，帕钦斯基博士和他的同事每年能探测到大约170个微透镜事件。有了OGLE-III和新软件，他们预计每年能检测到多达1000起事件。如此高的速率几乎保证了探测到木星质量的行星和恒星质量的黑洞。同样的数据将用于行星凌日的搜索。几乎所有OGLE-II数据（1997-2000）现在都可以在WWW和DAT上以高度压缩的格式获得：1 Terra字节的原始CCD图像已减少到不到10 GB。该档案包括银河系凸起、大麦哲伦星云（LMC）和小麦哲伦星云（SMC）约16平方度的高信噪比图像，以及约3000万颗非变星的光度测定。AC档案有大约25万颗变星的300 - 400个数据点。该小组预计OGLE-III探测到的大约100万颗变星的光度测量结果将在24小时内在线提供，随后在拍摄CCD图像的10分钟内提供。OGLE的数据将用于研究我们银河系的结构，大麦哲伦星系和小麦哲伦星系的结构，以及确定更精确的距离尺度