PRIMA Observatory
PRIMA Observatory

PRIMA includes both a sensitive wideband spectrometer, the Far-Infrared Enhanced Survey Spectrometer (FIRESS), and a multi-band spectrophotometric imager / polarimeter, the PRIMA Imager (PRIMAger). Both instruments use detectors limited by the natural background, and PRIMA's sensitivity unlocks the potential of the far-IR waveband to advance astrophysics across a broad range of topics spanning from galaxy and dust evolution in the early universe to the formation of planets and planetary atmospheres.

? ?
Telescope 1.8-m
all aluminum
4.5 Kelvin
PRIMAger
Imager and Polarimeter
R = 10 hyperspectral imaging (25-80 μm)
R = 4 imaging and polarimetry (91-261 μm)
FIRESS
Spectrometer
R > 85 spectroscopy
24-235 μm
High-Res mode
R = 4400 × (λ/112μm)
Detectors 100 mK KID arrays (~12k total)
Data IPAC
Orbit Earth-Sun L2
Instantaneous Field of Regard 26% of sky
Launch 2032
Observations 75% of time allocated to General Observer programs
25% Principal Investigator programs (available for Guest Investigators)