Numerical simulators are fundamental tools for the design and optimisation of missions and instruments.

I am and I've been involved in the development of different simulators, some of them are now publicly available.

Generic instrument simulators

The Generic instrument independent point source simulator. It's been used to build the radiometric models in the following missions: ARIEL, EXCITE, Twinkle, Mauve.

ExoSim 2

Refactored version of the end-to-end time domain simulator for the exoplanet transit observations.


PAOS, the Physical Optics Simulator, is a fast, modern, and reliable Python package for Physical Optics studies.

Mission dedicated tools


Radiometric model simulator for the ARIEL space mission.


Wrapper of ArielRad and TauREx to produce ARIEL simulated data-set of entire planetary populations.

Other tools

Rosseland and Planck opacity converter. It produces the two mean opacities from data.


A plugin for TauREx 3.1 that provides the Emcee sampler by Dan Foreman-Mackey & contributors for the retrieval.