The MIRI Medium Resolution Spectrometer calibration pipeline

TL;DR

The paper details the calibration pipeline for the MIRI Medium Resolution Spectrometer on JWST, addressing its unique processing steps and variants for different science cases.

Contribution

It provides a comprehensive description of the MRS calibration pipeline, including algorithms, data inputs, and calibration procedures, tailored for JWST's MIRI instrument.

Findings

Pipeline effectively calibrates MRS data for various science cases.

Specialized steps like fringe correction improve data quality.

Two pipeline variants optimize for general and specific science needs.

Abstract

The Mid-Infrared Instrument (MIRI) Medium Resolution Spectrometer (MRS) is the only mid-IR Integral Field Spectrometer on board James Webb Space Telescope. The complexity of the MRS requires a very specialized pipeline, with some specific steps not present in other pipelines of JWST instruments, such as fringe corrections and wavelength offsets, with different algorithms for point source or extended source data. The MRS pipeline has also two different variants: the baseline pipeline, optimized for most foreseen science cases, and the optimal pipeline, where extra steps will be needed for specific science cases. This paper provides a comprehensive description of the MRS Calibration Pipeline from uncalibrated slope images to final scientific products, with brief descriptions of its algorithms, input and output data, and the accessory data and calibration data products necessary to run the pipeline.