Merge pull request #141 from LSSTDESC/v3.0.2

Spectractor v3.0.2

• faster matrix multiplications using sparse matrices
• faster PSF computations with numba optimization
• faster Jacobian computations with analytical derivatives
• faster wavelength calibration
• separate fitted parameters from the big FitWorkspace class to manipulate them independently and have specific functions to load and save them in JSON format
• refactor simulation functions to simplify their maintenance (remove unused old functions)
• use Spectrum object as mandatory argument of SpectrumFitworkspace and SpectrogramFitworkspace instead of filename to adapt to Rubin LSST butler usage
• use the new FitParameters class as a parameter class for mathematical models like PSF and ChromaticPSF
• Implement a third diffraction order extraction
• !! DEBUG !! debug wavelength array computation with ADR
• new load/save functions that store/reload the config parameters with a supplementary FITS header in the Spectrum output.
  Short keys must be used because HIERARCH and CONTINUE are incompatible in current FITS headers.
• Fit multiple spectra at the same time with one common atmospheric model to get telescope throughputs
• add timeout errors in case of bad data quality or lousy initialisation of the fit
• replace mirror diameter parameters by effective surface parameter
• increase PWV upper bound

Spectractor v2.3

Major improvements for Spectractor new version 2.3

• decouple fits of diffraction order 1 and diffraction order 2
• remove dependency of pysynphot and use getCalspec
• gather the Spectractor outputs into one single FITS file
• fix lambda_ref to 550nm
• debug and adapt the software for AuxTel
• new order 2/1 ratio and throughput for AuxTel
• repair nosetests and doctests and coverage tests
• repair documentation

Spectractor v2.2

Spectractor release before major changes for AuxTel spectrum extraction

Paper version

This version was used to make the Spectractor paper results.

Improve performances

• factorisation of the PSF model classes
• more robust PSF fits
• add astrometry
• add documentation
• better background subtraction
• faster code for modelling the spectrograms
• debug many little things

Python 3.6 release

Working version for python 3.6. Extract the cross-spectrum and calibrate it accurately. Simulations and fits for the cross-spectrum.

First release

Include working spectractor version tested on simulations and real CTIO data; atmospehric parameter extraction with homemade MCMC algorithm. Python 2.7.