High-resolution, all-reflective imaging spectrometer

An imaging spectrometer, comprising:

• an all-reflective objective module that receives an image input and produces an objective module output at an exit slit, wherein the objective module is selected from the group consisting of a three-mirror anastigmat having an integral corrector mirror therein, and an all-reflective, relayed optical system comprising a set of five powered mirrors whose powers sum to substantially zero;
• an all-reflective collimating-and-imaging module that receives at least a portion of the objective module output as an objective-end input and produces a collimating-end output, wherein the collimating-and-imaging module comprises a reflective triplet;
• a dispersive element that receives the collimating-end output and produces a dispersive-end input into the collimating-and-imaging module that is reflected through the collimating-and-imaging module to produce a spectral-image-end output;
• a panchromatic imaging detector that receives at least a portion of the objective module output, and
• a hyper-spectral imaging detector that receives at least a portion of the spectral-image-end output of the collimating-and-imaging module, wherein the panchromatic imaging detector and the hyper-spectral imaging detector are located on opposite sides of an image plane coincident with the exit slit.