Gyoto is a framework for computing geodesics in curved space-times. The gyoto utility program uses this framework to compute images of astronomical objects in the vicinity of compact objects (e.g. black-holes). Such images are distorted by strong gravitational lensing. The gyoto program takes a scenery description in XML format, computes this scenery using relativistic ray-tracing, and saves the result in FITS format.

This package contains the `gyoto' command-line utility. More complex uses of the Gyoto framework can be achieved using the python3-gyoto or yorick-gyoto packages. Gyoto can be extended with plug-ins (see libgyoto8-dev).

MPI parallelization requires the mpi-default-bin package. Producing videos requires the python3-gyoto and python3-opencv packages.