Optical design for CETUS: a wide-field 1.5m aperture UV payload being studied for a NASA probe class mission study

Robert A. Woodruff; Tony Hull; Sara R. Heap; William Danchi; Stephen E. Kendrick; Lloyd Purves

doi:10.1117/12.2286680

5 September 2017 Optical design for CETUS: a wide-field 1.5m aperture UV payload being studied for a NASA probe class mission study

Robert A. Woodruff, Tony Hull, Sara R. Heap, William Danchi, Stephen E. Kendrick, Lloyd Purves

Author Affiliations +

Proceedings Volume 10401, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems; 104011P (2017) https://doi.org/10.1117/12.2286680
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

We are developing a NASA Headquarters selected Probe-class mission concept called the Cosmic Evolution Through UV Spectroscopy (CETUS) mission, which includes a 1.5-m aperture diameter large field-of-view (FOV) telescope optimized for UV imaging, multi-object spectroscopy, and point-source spectroscopy. The optical system includes a Three Mirror Anastigmatic (TMA) telescope that simultaneously feeds three separate scientific instruments: the near-UV (NUV) Multi-Object Spectrograph (MOS) with a next-generation Micro-Shutter Array (MSA); the two-channel camera covering the far-UV (FUV) and NUV spectrum; and the point-source spectrograph covering the FUV and NUV region with selectable R~ 40,000 echelle modes and R~ 2,000 first order modes. The optical system includes fine guidance sensors, wavefront sensing, and spectral and flat-field in-flight calibration sources. This paper will describe the current optical design of CETUS.

Citation Download Citation

Robert A. Woodruff, Tony Hull, Sara R. Heap, William Danchi, Stephen E. Kendrick, and Lloyd Purves "Optical design for CETUS: a wide-field 1.5m aperture UV payload being studied for a NASA probe class mission study", Proc. SPIE 10401, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems, 104011P (5 September 2017); https://doi.org/10.1117/12.2286680

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