The KH-10 (BYEMAN codename DORIAN) was the classified designation for the reconnaissance mission and equipment of the experimental Manned Orbiting Laboratory (MOL), also inaccurately referred to as Gemini-B.
A single, unmanned launch of a simulated MOL which was a Titan I first stage oxidizer tank with the Gemini II capsule occurred in 1966. . Subsequently the program was cancelled, and no additional hardware flew in space.
After DORIAN was cancelled, Project COLT provided six surplus 72-inch (1.8 m) optical mirrors to the Smithsonian Institution/University of Arizona's Multiple Mirror Telescope. The mirrors were constructed by Corning and used honeycombed borosilicate to reduce the weight.
- Almaz, equivalent and implemented Soviet project
- KH-11 Kennan, America's first near real-time electro-optical satellite, supplanting DORIAN's mission
Media related to KH-10 DORIAN at Wikimedia Commons