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Wavelength Solution

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Mickael Rigault edited this page Oct 20, 2017 · 5 revisions

Introduction

Concept: The wavelength solution is the parametrization of the pixel-wavelength relation. This solution is made of two steps:

  1. Fit the central position (in pixel) of sets of predefined spectral arclamp lines.
  2. Fit the polynomial relation between the fitted pixel position and the known line wavelengths.

File: pysedm/wavesolution.py

Objects:

  • WaveSolution: Main object, contains high level based on following objects
  • SpaxelWaveSolution: Object enabling the pixel<->wavelength (not fitting, only using)
  • VirtualArcSpectrum: [Virtual] Has the wavelengths solution fit.
    • ArcSpectrum: Fit the line position (in pixel) for 1 given spectrum
    • ArcSpectrumCollection: Fit the line position (in pixel) for a list of spectra.

Usage

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