PypeIt 1.1.0

PypeIt is a Python package for semi-automated reduction of astronomical, spectroscopic data. Its algorithms build on decades-long development of previous data reduction pipelines by the developers. The reduction procedure - including a complete list of the input parameters and available functionality - is provided by this online documentation.

PypeIt is a set of commands designed to perform the reduction without any additional coding.

This v1.1 release of PypeIt is designed to be used by both advanced spectroscopists with prior data reduction expertise and astronomers with no prior experience of data reduction. It is highly configurable and designed to be applied to any standard slit-imaging spectrograph, and can accommodate long-slit, multi-slit, as well as cross-dispersed echelle spectra.

What this version provides

• Support for 10+ Spectrographs

  • Gemini/GNIRS

  • Gemini/GMOS

  • Gemini/FLAMINGOS 2

  • Lick/Kast

  • Magellan/MagE

  • Magellan/Fire

  • MDM/OSMOS

  • Keck/DEIMOS (600ZD, 830G, 1200G)

  • Keck/LRIS

  • Keck/MOSFIRE (Y, J, K gratings tested)

  • Keck/NIRES

  • Keck/NIRSPEC (low-dispersion; old detector)

  • LBT/Luci-I

  • LBT/Luci-II

  • LBT/MODS

  • MDM/OSMOS

  • MMT/MMIRS

  • MMT/binospec

  • NOT/ALFOSC

  • P200/DBSP

  • P200/TripleSpec

  • VLT/X-Shooter (VIS, NIR)

  • VLT/FORS2 (300I, 300V)

• Default reduction algorithms

  • Flat Fielding with illumination pattern correction

  • Full 2D Wavelength Calibration (no rectification)

  • Flexure Correction (spatial and spectral)

  • Global and local sky subtraction

  • Optimal (and boxcar) Extraction

  • A-B image differencing

• Documentation

  • Installation

  • Setup

  • PypeIt Parameters

  • PypeIt Cookbook

  • Data Models for (nearly) all output files

  • Fluxing

  • Manual Extraction

  • Telluric correction

  • Coadd 1D Spectra

  • Coadd 2D Spectra

• Scripts and Tools for Inspection

  • Slit Edges – pypeit_chk_edges

  • Flats – pypeit_chk_flats

  • 1D Spectra– pypeit_show_1dspec

  • 2D Spectra– pypeit_show_2dspec

• Quick Look Reductions

What this version is missing (i.e. what we are working on)

• Slitmask metadata slurping (e.g. Keck/DEIMOS)

• Full 2D coadd support

• Keck/HIRES, Keck/ESI support

• Additional QA outputs

• A dashboard to monitor/control PypeIt

Users

If you are mainly here to use PypeIt to reduce your observational data then this section is for you. Ideally, you will need to go not much further than the few links in this section take you.

If you have problems, we have a very active “PypeIt Users” Slack workspace. We periodically update the invitation here. If you find a bug or have a feature request, please submit an issue.

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Getting started

• Code of Conduct
• Installation
• PypeIt Cookbook
• Overview
• Setup
• Main Run
• Inspecting Files
• Fluxing

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Running

• Spectrographs
• Setup
• PypeIt Parameters
• PypeIt Reduction File
• Running PypeIt
• Quick Look Reductions
• Object Finding
• Extraction
• PypeIt scripts

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Standard outputs

• Calibrations
• Outputs
• PypeIt QA

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Further processing

• Fluxing
• Coadd 1D Spectra

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For developers

• PypeIt Development Procedures and Guidelines
• Additonal Developer Links

Contributors

PypeIt is an open-source, community developed package. Astronomers are encouraged to join the project and should review our Code of Conduct and PypeIt Development Procedures and Guidelines. We would also appreciate if you contact the lead developers (JXP, JFH) before beginning development activities.

The following persons have contributed substantially to the development of PypeIt.

• J Xavier Prochaska

• Joseph F. Hennawi

• Kyle B. Westfall

• Ryan J. Cooke

• Feige Wang

• Tiffany Hsyu

• Frederick B. Davies

• Emanuele Paolo Farina