Published January 16, 2026 | Version v1.2.1
Software Open

PyIRD: A Python-Based Data Reduction Pipeline for Subaru/IRD and REACH

Authors/Creators

  • 1. ROR icon Institute of Space and Astronautical Science
  • 2. Japan Aerospace Exploration Agency/Institute of Space and Astronautical Science
  • 3. The University of Tokyo
  • 4. ROR icon National Institutes of Natural Sciences
  • 5. ROR icon National Astronomical Observatory of Japan

Description

PyIRD is an open-source Python pipeline for reducing high-dispersion spectroscopic data obtained with the IRD and REACH instruments on the Subaru Telescope. It processes raw detector images into calibrated one-dimensional spectra through a semi-automatic workflow, including readout noise subtraction, flat fielding, aperture extraction, wavelength calibration, and normalization. The design avoids dependencies on legacy tools such as IRAF, enabling reproducible and efficient data reduction for astronomical research.

This release corresponds to a stable version of PyIRD intended for use in research workflows in stellar and exoplanet spectroscopy.

This version reflects revisions and improvements made during the peer-review process for the Journal of Open Source Software (JOSS) and corresponds to the version submitted for publication.

Files

prvjapan/pyird-v1.2.1.zip

Files (40.5 MB)

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Additional details

Related works

Is supplement to
Software: https://github.com/prvjapan/pyird/tree/v1.2.1 (URL)

Software

Repository URL
https://github.com/prvjapan/pyird