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  OLIMPO: a mm and submm telescope on a stratospheric balloon

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Expected performance of OLIMPO (photon noise limited)

performance table

Spectral observations of the S-Z effect in clusters of galaxies with OLIMPO

simulation SZ

Simulation of the result of 3 hours of integration with one measurement pixel pointed at the center of a rich cluster

Current ground based observations are photometric and have 2-3 bands at f<250 GHz.
See de Bernardis et al. A&A 538 (2012) for details.

OLIMPO will measure up to 40 clusters per flight in this way.

Measurements of the damping tail of the angular power spectrum
of CMB anisotropy with OLIMPO (4 photometric bands)

in preparation