mfit: Model Fitting Software for Optical Interferometry

Bayesian model-fitting to OI-FITS-format data.

Overview

mfit is a tool for fitting simple parametrisations of the sky brightness distribution to optical (visible/IR) interferometry data. The source code is available for download, see the links below. You will need a Fortran 90/95 compiler (such as the freely-available G95) to build mfit.

Features of mfit include:

• Asymmetric, multi-component models
• Four limb-darkening parametrisations (Taylor and Gauss-Hermite expansions, Hestroffer and square-root models)
• Interactive, command-line, and GUI interfaces
• Plots of data and model

The following screen grab shows the GUI interface to mfit, fitgui:

Download

Gzipped tar file of package: mfit.tar.gz

Acknowledgments

mfit was written by Matthew Worsley, and subsequently modified by John Young. Please send bug reports and requests for new features to John Young (jsy1001 (at) cam.ac.uk).