Instrument Calibration of the Interface Region Imaging Spectrograph (IRIS) Mission |
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| Authors: | J.-P. Wülser S. Jaeggli B. De Pontieu T. Tarbell P. Boerner S. Freeland W. Liu R. Timmons S. Brannon C. Kankelborg C. Madsen S. McKillop J. Prchlik S. Saar N. Schanche P. Testa P. Bryans M. Wiesmann |
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| Affiliation: | 1.Lockheed Martin Solar & Astrophysics Laboratory,Lockheed Martin Advanced Technology Center,Palo Alto,USA;2.Department of Physics,Montana State University, Bozeman,Bozeman,USA;3.Harvard-Smithsonian Astrophysical Observatory,Cambridge,USA;4.High Altitude Observatory,National Center for Atmospheric Research,Boulder,USA;5.Institute of Theoretical Astrophysics,University of Oslo,Oslo,Norway;6.Bay Area Environmental Research Institute,NASA Research Park,Moffett Field,USA;7.National Solar Observatory,Pukalani,USA;8.Apple Inc.,Cupertino,USA;9.University of St Andrews,St Andrews,UK |
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| Abstract: | The Interface Region Imaging Spectrograph (IRIS) is a NASA small explorer mission that provides high-resolution spectra and images of the Sun in the 133?–?141 nm and 278?–?283 nm wavelength bands. The IRIS data are archived in calibrated form and made available to the public within seven days of observing. The calibrations applied to the data include dark correction, scattered light and background correction, flat fielding, geometric distortion correction, and wavelength calibration. In addition, the IRIS team has calibrated the IRIS absolute throughput as a function of wavelength and has been tracking throughput changes over the course of the mission. As a resource for the IRIS data user, this article describes the details of these calibrations as they have evolved over the first few years of the mission. References to online documentation provide access to additional information and future updates. |
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