Other Telescopes
A 24-inch (610 mm) telescope fitted with an infrared detector purchased from a military contractor was used by Eric Becklin in 1966 to determine the center of the Milky Way for the first time.
In 1968, the first large-area near-IR (2.2 µm) survey of the sky was conducted by Gerry Neugebauer and Robert B. Leighton using a 62-inch (1.6 m) reflecting dish they had built. The instrument is now in the Smithsonian.
Read more about this topic: Mount Wilson Observatory