Optical design of the Carbon Plume Mapper (CPM) imaging spectrometer

The Carbon Plume Mapper (CPM) instrument is a high-fidelity imaging spectrometer developed to pinpoint, quantify, and track methane (CH4) and carbon dioxide (CO2) point-source emissions from super-emitters to help enable reduction of greenhouse gases in the Earth’s atmosphere. CPM will operate over the spectral range of 400 – 2500 nm with a spectral sampling of 5.0 nm. CPM will be integrated into an industry partner spacecraft bus and launched into low-Earth orbit (LEO). The optical design comprises a three-mirror anastigmat (TMA) and Dyson form spectrometer which reduces volume and mass for a fast (F/1.8) optical system. An overview of the CPM optical design, development, and current status is discussed.