The stratospheric terahertz observatory

P. N. Bernasconi, D. Neufeld, C. Walker, D. Hollenbach, J. Kawamura, J. Stuzki

Research output: Contribution to journalArticlepeer-review


The Stratospheric Terahertz Observatory (STO) is a long-duration balloon (LDB) experiment designed to address a key problem in modern astrophysics. STO is a collaborative effort led by the University of Arizona and APL with a significant contribution from the JHU Department of Physics and Astronomy. It is a balloon-borne observing platform that will carry an 80-cm-aperture telescope in the stratosphere at an altitude of ̃120,000 feet. The telescope will feed a heterodyne receiver consisting of eight phonon-cooled hot-electron bolometer (HEB) mixers, optimized for the dominant interstellar cooling line [CII].

Original languageEnglish (US)
Pages (from-to)238-239
Number of pages2
JournalJohns Hopkins APL Technical Digest (Applied Physics Laboratory)
Issue number3
StatePublished - 2010

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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