SPHEREx: NASA's near-infrared spectrophotometric all-sky survey
B. P. Crill, M. W. Werner, Rachel Akeson, M. L. N. Ashby, L. E. Bleem, J. J. Bock, Sean Bryan, Jill Burnham, Joyce Byunh, Tzu‐Ching Chang, Yi-Kuan Chiang, W. R. Cook, Asantha Cooray, A. J. Davis, OIivier Doré, Darren Dowell, Gregory P. Dubois-Felsman, T. F. Eifler, Andreas L. Faisst, Salman Habib, Chen Heinrich, Katrin Heitmann, Grigory Heaton, Christopher M. Hirata, Viktor Hristov, H. Hui, Woong-Seob Jeong, J. Kang, B. Kecman, J. Davy Kirkpatrick, Phillip Korngut, E. Krause, Bomee Lee, C. M. Lisse, Daniel Masters, P. Mauskopf, Gary J. Melnick, H. Miyasaka, Hooshang Nayyeri, Hien T. Nguyen, Karin I. Öberg, S. Padin, R. Paladini, Milad Pourrahmani, Jeonghyun Pyo, Roger Smith, Yong-Seong Song, Teresa Symons, Harry I. Teplitz, Volker Tolls, Steve Unwin, Rogier A. Windhorst, Yujin Yang, M. Zemcov
Abstract
SPHEREx, the Spectro-Photometer for the History of the Universe, Epoch of Reionization, and ices Explorer, is a NASA MIDEX mission planned for launch in 2024. SPHEREx will carry out the first all-sky spectral survey at wavelengths between 0.75µm and 5µm with spectral resolving power ~40 between 0.75 and 3.8µm and ~120 between 3.8 and 5µm At the end of its two-year mission, SPHEREx will provide 0.75-to-5µm spectra of each 6.”2x6.”2 pixel on the sky - 14 billion spectra in all. This paper updates an earlier description of SPHEREx presenting changes made during the mission's Preliminary Design Phase, including a discussion of instrument integration and test ow and a summary of the data processing, analysis, and distribution plans.