  BiGONLight, Bi-local Geodesic Operators framework for Numerical Light
propagation, is a new tool for light propagation in Numerical Relativity. The
package implements the Bi-local Geodesic Operators formalism, a new framework
for light propagation in General Relativity. With BiGONLight it is possible to
extract observables such as angular diameter distance, luminosity distance,
magnification as well as new real-time observables like parallax and redshift
drift within the same computation. As test-bed for our code we consider two
cosmological models, the $\Lambda$CDM and the inhomogeneous Szekeres model, and
a simulated dust universe. All our tests show an excellent agreement with known
results.
