親子觀星會

New French Telescope Trio Will Scan the Sky for Earth-Like Planets



The ExTrA telescopes at ESO's La Silla Observatory in Chile will be used to locate and analyze Earth-size planets orbiting nearby red dwarf stars. ExTrA's new design allows for greater sensitivity compared to previous searches. In this nighttime image, the ExTrA three domes are seen under a beautiful sky featuring the constellation Orion (the Hunter) and the Pleiades star cluster.
Credit: Petr Horálek/ESO



https://scitechdaily.com/extra-telescopes-successfully-make-first-observations/
ExTrA Telescopes Successfully Make First Observations

https://www.universetoday.com/138373/new-earth-sized-planet-hunting-telescope-extra-now-online/

(https://www.universetoday.com/wp-content/uploads/2018/01/eso1803a-700x432.jpg)

 Exoplanets in Transits and their Atmospheres (ExTrA) project, which is the latest addition to the ESO’s La Silla Observatory in Chile

使用 3台 60cm 望遠鏡做類地系外行星尋找 

https://www.cnbeta.com.tw/articles/science/1477686.htm

在智利的拉西拉天文台（La Silla Observatory）中隐藏着一个小而强大的望远镜，它是ExTrA项目的一部分，负责扫描天空，寻找遥远恒星周围的类地行星。 ExTrA 利用行星经过前方时星光微弱变暗的现象，将目标锁定在红矮星上，因为那里的潜在宜居世界更容易被探测到。

它是法国领导的ExTrA项目的三台望远镜之一，该项目旨在探测环绕遥远恒星运行的行星银河系，并研究它们的环境。 但是，这些望远镜是如何发现这么多关于光年之外的世界的信息的呢？

https://www.techbang.com/posts/121360-the-big-discovery-of-small-telescopes-how-extra-searches