Spitzer Space Telescope and INTEGRAL, are which type of specific item?
Spitzer Space Telescope The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space telescope launched in 2003. It is the fourth and final of the NASA Great Observatories program.
Infrared atmospheric sounding interferometer The infrared atmospheric sounding interferometer (IASI) is a Fourier transform spectrometer based on the Michelson interferometer, associated with an integrated imaging system (IIS).