Infrared spectrometer for Voyager

Abstract

The Voyager IR investigation uses a Michelson interferometer with a 4.3-cm⁻¹ spectral resolution in the 180–2500-cm⁻¹ range and a single-channel radiometer for the visible and near-IR, 5000–30,000-cm⁻¹. Both devices share a Cassegrain telescope with a 50-cm diam primary mirror and a 0.25° field of view. Design, calibration, and performance are discussed along with a sample spectrum of Jupiter.