04 January 2010: The Heart of a Powerful Telescope
2010.1.4:VLT的心脏——近红外阵列相机和光谱仪(ISAAC)
This image shows the interior of one of the four 8.2-metre Unit Telescopes at ESO’s Very Large Telescope (VLT) in Paranal, Chile. Designated Unit Telescope 1, or UT1, and named Antu, this complex science machine has been in operation at Paranal since 1999. Just before sunset, technicians retract UT1’s windshield and work to finalise the preparations at the telescope for the night-time observation run. During the day, the enclosure is kept shut to protect the delicate and valuable scientific equipment inside, as well as to ensure minimal temperature differences between the telescope and the atmosphere at opening.
本图是位于智利帕拉纳尔山顶的8.2米口径甚大望远镜(VLT)的内部。图中展示的是4台巨镜的1#主镜(UT1),名为Antu,当地土语:“太阳”之意,这个复杂的科学设施自1999年起工作。在本图中,夕阳下,望远镜的挡风玻璃次第打开,工作人员正在完成为夜间观测而进行的最后准备工作。而在白天,望远镜的遮罩则是紧闭的,以保护里面娇嫩贵重的科学仪器,确保望远镜和大气间的温差尽量小。
To the left of the telescope’s main mirror housing, in the centre of the image, is the Infrared Spectrometer And Array Camera (ISAAC), which was, until recently, attached to this instrument. It has now been moved to another of the Unit Telescopes, UT3 or Melipal.
图中央主镜左边的就是望远镜的心脏设备——近红外阵列相机和光谱仪(ISAAC),不久前它刚刚移位到3#主镜——名为“南十字”(土语)的UT3。
This image is available in high resolution in the image archive.
本图的高清晰版本见下楼。 |