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Welcome to ASTRA

This is the documentation of Astrophysical Spectral Tools for Retrieval & Analysis (ASTRA), with a standard implementation of:

  • Access to stellar spectra from multiple state-of-the-art spectrographs
  • Construction of telluric masks, based on the observations with the worst atmospheric conditions
  • Construction of high-SNR stellar templates from the available observations

ASTRA is now working as the low-level data-interface of the s-BART pipeline for RV extraction and it also allows for:

  • Built-in normalization of stellar spectra
  • Built-in interpolation of stellar spectra to new wavelength grids
  • Smoothing of stellar spectra

Installation

Installation of ASTRA can be made either through Pypi or through github:

pip install ASTRA-spectra

git clone git@github.com:Kamuish/ASTRA.git
cd ASTRA
pip install .

By default, ASTRA does not install Telfit as it will only be needed for the masking of the telluric features. If this is the goal, it must be installed manually.

Issues and contribution

Management of any issues to the code, as well as external contribution is done through the github repository

Changelog

V1.1.0 (2nd July 2025)

  1. Addition of new interpolation algorithms
  2. Inclusion of interface to SPIROU simulated data
  3. Added BERV_factor to ESO pipelines
  4. Improvement of data interface to iterate over template construction

V1.0.0 (5th of May 2025)

  • Original commit, as transposed from sBART internals
  • Addition of CARMENES and MAROON-X as valid instruments for analysis