Stratospheric Terahertz Observatory
STO, the Stratospheric Terahertz Observatory, is a balloon-borne 80 cm telescope with 4-pixel cryogenic heterodyne receiver arrays at 1.4 to 1.9 THz, exploring the Milky Way in the far-infrared [CII] and [NII] lines. STO had a successful 14-day Antarctic flight in January 2012. For more information see the Stratospheric Terahertz Observatory website.
Principal Investigator : Prof. Chris Walker
![For the public](/sites/default/files/styles/small_triplet_thumbnail/public/orange_skycenter.jpg?itok=w5jQazCT)
For Public
Public events include our Monday Night Lecture Series, world-reknowned Astronomy Camp and Mt Lemmon Sky Center.
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For Students
A good place to start if you want to become an undergrad major or grad student, or need to find our schedule of classes.
![For Scientists](/sites/default/files/styles/small_triplet_thumbnail/public/GMT%20completed%20artist_0.jpeg?itok=jvpdVkES)
For Scientists
Find telescopes and instruments, telescope time applications, staff and mountain contacts, and faculty and staff scientific interests.