The Mid-Infrared Instrument for the<i>James Webb Space Telescope</i>, X: Operations and Data Reduction

Abstract

We describe the operations concept and data reduction plan for the Mid-\nInfrared Instrument (MIRI) for the James Webb Space Telescope (JWST). The\noverall JWST operations concept is to use Observation Templates (OTs) to\nprovide a straightforward and intuitive way for users to specify observations.\nMIRI has four OTs that correspond to the four observing modes: 1.) Imaging, 2.)\nCoronagraphy, 3.) Low Resolution Spectroscopy, and 4.) Medium Resolution\nSpectroscopy. We outline the user choices and expansion of these choices into\ndetailed instrument operations. The data reduction plans for MIRI are split\ninto three stages, where the specificity of the reduction steps to the\nobservation type increases with stage. The reduction starts with integration\nramps: stage 1 yields uncalibrated slope images; stage 2 calibrates the slope\nimages; and then stage 3 combines multiple calibrated slope images into high\nlevel data products (e.g. mosaics, spectral cubes, and extracted source\ninformation). Finally, we give examples of the data and data products that will\nbe derived from each of the four different OTs.\n