Devices used to measure an electromagnetic spectrum are called spectrograph or spectrometer. The Hubble Space Telescope observed the planet by using its Cosmic Origins Spectrograph (COS). They gathered spectra on it using the Far Ultraviolet Camera/Spectrograph. Raman had invented an instrument for detecting and measuring electromagnetic waves called a spectrograph. The infrared echo was also seen by IRAS and studied with the Infrared Spectrograph. The degradation is more severe for the RVS spectrograph than for the astrometry measurements. Carruthers is considered the inventor of the ultraviolet camera/spectrograph. The GHRS was a spectrograph designed to operate in the ultraviolet. Several digital mixers include spectrograph and real time analyzer functions. F. W. Aston subsequently discovered multiple stable isotopes for numerous elements using a mass spectrograph. It was detected with the radial velocity technique with the SOPHIE echelle spectrograph. A new multi-object optical spectrograph, WEAVE, is expected to be installed during 2019. The craft included a lander equipped with a low-frequency radio spectrograph and geological research tools. This instrument consists of a spectrograph combined with a polarimeter. The Cosmic Origins Spectrograph, and the Wide Field Camera 3.