Release 2.5.1 of MiRA

Fixed

• File mira2_models.i was not installed.
• FITS keyword EXTEND shall only be set in the primary HDU.
• FITS keywords PCOUNT=0 and GCOUNT=1 must be defined in image extensions.
• As the result of theses fixes, produced FITS files shall be compliant with FITS standard. In particular with the FITSVERIFY tool. This however requires that the very last fits.i file from the master branch of Yorick be used.

Release 2.5.0 of MiRA

Added

• New option -save_model_data to save input data along with their models model in the output file. This also makes MiRA compliant with OI-Interface. Option -oi-imaging implies -save_model_data.

Removed

• Option -save_visibilities is marked as deprecated.

Release 2.4.2 of MiRA

Since version 2.3.1

• Add GPNORM keyword, this is needed by PYRA.
• Add option xtol to set the relative tolerance in variable change for convergence.
• MiRA use VMLMB by default and if it is installed for solving the constrained problem. This package provides a pure Yorick implementation of the VMLMB algorithm which has a number of enhencements compared to the one in OptimPackLegacy.

Release 2.3.1 of MiRA

This version has been modified for better integration in the OI-Imaging framework.

Release 2.0.0 of MiRA

This major release provides the following features:

• Accounting of spectral bandwidth smearing (with customizable shape and importance factor).
• Plugins can be loaded by MiRA to modify the model of the complex visibilities. See file mira2_plugin_central_star.i for a concrete example or have a look at SPARCO plugin.
• Can save model complex visibilities (options -save_visibilities).
• Add soft-thresholding (skip thresholding if no pixels above soft-threshold level).
• Add multi-thread support.
• Use environment variables MIRA_SRCDIR and MIRA_YORICK.
• Improved accounting of missing/partial data.
• Multiple possible choices for the objective function used for specific kind of (partial) data.
• Speedup building of non-separable linear model (with or without smearing).
• Global setting of the debug and quiet modes.
• Colored messages.

Beta version of MiRA 2

MiRA-2 is an almost complete rewrite of MiRA-1 with the objective to support 2nd generation VLTI instruments. For the end user the most significant changes are:

• Accounting of bandwidth smearing (with customizable shape and importance factor).
• Ability to save model complex visibilities (options --save_visibilities).
• Multiple possible choices for the objective function used for specific kind of (partial) data. The various objective functions follow the equations in published papers.
• Improved accounting of missing/partial data.
• Optional recentering and/or soft-thresholding of the input image.
• Multi-thread support.
• Environment variables MIRA_SRCDIR and MIRA_YORICK can be used to specify where are installed the sources and wich Yorick interpreter to use.

MiRA-2 is intended to be used form the command line, the result being saved to a FITS file. Graphics display has been removed (could be back later).

MiRA version 1.1.2

Changes:

• Fix accounting of bad data in OI-FITS file.
• Ability to resample images.
• Improve graphics.
• Fix multiple wavelenghts case.

MiRA version 1.1.1

• Better algorithm to compute the dirty map and the dirty beam.
• Improve command line help, provide a manual page.
• Speed up plots.

MiRA version 1.1.0

• Provide a command line interface (options in command line have units).
• Provide configuration and installation scripts.
• Now available on GitHub (https://github.com/emmt/MiRA).
• Use Git submodules (see
  https://chrisjean.com/git-submodules-adding-using-removing-and-updating/ for
  a tutorial) for YLib, YOIFITS, IPY to share files with other repositories.