请输入您要查询的字词:

 

单词 Two-Micron All-Sky Survey
释义
Two-Micron All-Sky Survey

Astronomy
  • A survey of the entire sky in three near-infrared wave bands (J, H, and K) carried out jointly by the University of Massachusetts and the Infrared Processing and Analysis Center (IPAC) of the California Institute of Technology (Caltech). Two identical 1.3-m reflectors were used, one at the Fred Lawrence Whipple Observatory in Arizona and the other at Cerro Tololo Inter-American Observatory in Chile. The northern survey started in 1997 and the southern in 1998; both were completed in 2001, and the 2MASS All-Sky Catalog was released in 2003, containing positions and photometry for 470 992 970 objects.

    http://www.ipac.caltech.edu/2mass/ Official project website with numerous images.


随便看

 

科学参考收录了60776条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。

 

Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号 更新时间:2024/7/1 0:16:16