From Event: SPIE Optical Engineering + Applications, 2017
The ultraviolet multi-object spectrograph (MOS) for the Cosmic Evolution Through UV Spectroscopy (CETUS) concept1,2 is a slit-based instrument allowing multiple simultaneous observations over a wide field of view. It utilizes a next-generation micro-shutter array, an efficient aspheric Offner spectrometer design with a convex grating, and carbon nanotube light traps for suppressing unwanted wavelengths. The optical coatings are also designed to optimize the UV throughput while minimizing out-of-band signal at the detector. The UV MOS will be able to target up to 100 objects at a time without the issues of confusion with nearby sources or unwanted background like zodiacal stray light. With this multiplexing, the scientific yield of both Probe and Great Observatories will be greatly enhanced.
Stephen E. Kendrick, Robert A. Woodruff, Tony Hull, Sara R. Heap, Alexander Kutyrev, William Danchi, and Lloyd Purves, "Multiplexing in astrophysics with a UV multi-object spectrometer on CETUS, a probe-class mission study," Proc. SPIE 10401, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems, 1040111 (Presented at SPIE Optical Engineering + Applications: August 10, 2017; Published: 5 September 2017); https://doi.org/10.1117/12.2286681.
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