This instrument consists of a spectrograph combined with a polarimeter. Optical rotation is measured with an instrument called a polarimeter. Such light has an 'angle' that can be measured using a tool called a polarimeter. Optical activity is measured using a polarized source and polarimeter. The Herschel Space Observatory does not have a polarimeter. It is also the imaging polarimeter subsystem of the VLT-SPHERE instrument. The polarimeter is made up of two Nicol prisms (the polarizer and analyzer). The polarimeter was designed and built at UNC's Goodman Laboratory for Astronomical Instrumentation. The X-ray Polarimeter Satellite (XPoSat) is a planned mission to study polarisation. Neuberger's skills in the creation and use of instrumentation were notable; he designed a polarimeter.