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First light1996 Edit this on Wikidata
Telescope styleballoon-borne telescope
cosmic microwave background experiment
radio telescope Edit this on Wikidata
Websitewww.physics.princeton.edu/cosmology/qmap/ Edit this at Wikidata

QMAP was a balloon experiment to measure the anisotropy of the Cosmic microwave background. It flew twice in 1996, and was used with an interlocking scan of the skies to produce cosmic microwave background (CMB) maps.

The gondola was later used for ground-based observations as the MAT/TOCO experiment; so named because the instrument was called the Mobile Anisotropy Telescope and it was positioned at Cerro Toco in the Chilean Andes.[1] It was the first such experiment to localize the position of the first acoustical peak in the CMB.[2]

See also[edit]


  1. ^ Torbet, E.; Devlin, M. J.; Dorwart, W. B.; Herbig, T.; et al. (1999). "A Measurement of the Angular Power Spectrum of the Microwave Background Made from the High Chilean Andes". The Astrophysical Journal. 521 (2): L79–L82. arXiv:astro-ph/9905100. Bibcode:1999ApJ...521L..79T. doi:10.1086/312197. S2CID 16534514.
  2. ^ Miller, A.; Beach, J.; Bradley, S.; Caldwell, R.; et al. (June 2002). "The QMAP and MAT/TOCO Experiments for Measuring Anisotropy in the Cosmic Microwave Background". The Astrophysical Journal Supplement Series. 140 (2): 115–141. arXiv:astro-ph/0108030. Bibcode:2002ApJS..140..115M. doi:10.1086/339686. S2CID 18246763.