Miller, Eric D.Sawada, MakotoGuainazzi, MatteoSimionescu, AuroraHayashi, TakayukiBoissay-Malaquin, RozennTamura, KeisukeYaqoob, TahirPottschmidt, Katjaet al2022-08-152022-08-152020-12-13Miller, E. D., “Planning in-flight calibration for XRISM”, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 2020, vol. 11444. doi:10.1117/12.2561608.https://doi.org/10.1117/12.2561608http://hdl.handle.net/11603/25413SPIE Astronomical Telescopes + Instrumentation, 2020, Online OnlyAuthors: Eric D. Miller, Makoto Sawada, Matteo Guainazzi, Aurora Simionescu, Maxim Markevitch, Liyi Gu, Megan Eckart, Caroline Kilbourne, Maurice Leutenegger, F. Scott Porter, Masahiro Tsujimoto, Cor de Vries, Takashi Okajima, Takayuki Hayashi, Rozenn Boissay-Malaquin, Keisuke Tamura, Hironori Matsumoto, Koji Mori, Hiroshi Nakajima, Takaaki Tanaka, Yukikatsu Terada, Michael Loewenstein, Tahir Yaqoob, Marc Audard, Ehud Behar, Laura Brenneman, Lia Corrales, Renata Cumbee, Teruaki Enoto, Edmund Hodges-Kluck, Yoshitomo Maeda, Paul Plucinsky, Katja Pottschmidt, Makoto Tashiro, Richard Kelley, Robert Petre, Brian Williams, Hiroya YamaguchiThe XRISM X-ray observatory will fly two advanced instruments, the Resolve high-resolution spectrometer and the Xtend wide-field imager. These instruments, particularly Resolve, pose calibration challenges due to the unprecedented combination of spectral resolution, spectral coverage, and effective area, combined with a need to characterize the imaging fidelity of the full instrument system to realize the mission’s ambitious science goals. We present the status of the XRISM in-flight calibration plan, building on lessons from Hitomi and other X-ray missions. We present a discussion of targets and observing strategies to address the needed calibration measurements, with a focus on developing methodologies to plan a thorough and flexible calibration campaign and provide insight on calibration systematic error. We also discuss observations that exploit Resolve’s spectral21 pagesen-USThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.Public Domain Mark 1.0Text