IRTF

Explanation: The NASA Infrared Telescope Facility (IRTF) is a 3-meter (9.8 ft) telescope optimized for use in infrared astronomy (including spectroscopic observations of Pluto and other outer Solar System objects) and is located at the Mauna Kea Observatory in Hawai'i.

Pluto

Image credit: Wikipedia/Afshin Darian.