National Astronomical Observatory (Mexico) - Telescopes

Telescopes

There are three optical telescopes on the summit of Sierra San Pedro Mártir, all with a Ritchey-Chrétien design:

• The 2.12 m (83 in) telescope was built between 1974 and 1979 and is tied as Mexico's largest optical telescope. It has secondary mirrors of f/7.5, f/13.5 or f/30. Direct imaging and optical spectroscopy are performed with a number of different charge-couple devices and spectrographs.
• The 1.52 m (60 in) telescope was built by the University of Arizona (UA) Lunar and Planetary Laboratory (LPL). It was installed in 1970 with the assistance of LPL. Direct imaging, optical spectroscopy, and photometry are done with a f/13.5 secondary mirror.
• The 0.84 m (33 in) telescope was loaned to UNAM by UA in the late 1960s and was the first to be installed at the site. Direct imaging, optical spectroscopy, and photometry are done with a f/15 secondary mirror.