Astronomy: Telescopes

General Information 

• NASA Telescopes 101: General information on the different types of telescopes. 
• Guide from NASA on How Do Telescopes Work?
• WorldWide Telescope (WWT): A free open-source tool for exploring the universe. 

Space Telescopes

• Chandra X-ray Observatory: A telescope specially designed to detect X-ray emission from very hot regions of the Universe such as exploded stars, clusters of galaxies, and matter around black holes. 
• Hubble Space Telescope: NASA's site for information on Hubble Space Telescope.
• James Webb Telescope: NASA's site for James Webb Space Telescope information including the latest images. 

Ground-Bases Telescopes

• Keck Observatory: Astronomers around the world use W. M. Keck Observatory to observe the universe with unprecedented power and precision. 
• Atacama Large Millimeter/submillimeter Array (ALMA): An international radio telescope that can study cosmic light that straddles the boundary between radio and infrared. See the ALMA webcam.