A view of the Tycho Armillary Sphere reproduction on display in Explore the Universe. The Sphere was built by Danish astronomer Tycho Brahe in the late 1500s to study the sky and to teach about the celestial coordinate system. Image Number:SI2001-9898
A view looking down the Herschel 20-foot Telescope Tube. Image Number:WEB10060-2003 Credit:Photo by Eric Long Copyright:Smithsonian Institution JPEG Preview High-Resolution (Media registration required)
Measuring machine from Lick Observatory and spectrum of 3C 327 from Palomar. Image Number:WEB10059-2003 Credit:Photo by Eric Long Copyright:Smithsonian Institution JPEG Preview High-Resolution (Media registration required)
WF/PC-1 pickoff mirror and folding mirrors. Image Number:WEB10058-2003 Credit:Photo by Eric Long Copyright:Smithsonian Institution JPEG Preview High-Resolution (Media registration required)
Mayall 4-meter reflector model. Image Number:WEB10056-2003 Credit:Photo by Eric Long Copyright:Smithsonian Institution JPEG Preview High-Resolution (Media registration required)
