2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/115933Gravitational microlensing is a new technique that allows low-mass exoplanets to be detected at large distances of ~7kpc. This paper briefly outlines the principles of the method and describes the observational techniques. It shows that small (e.g. 0.35m) telescopes with a CCD camera can make unexpectedly useful observations of these events.8 pages, 4 figures, Society for Astronomical Science (May 2006)Astrophysicstext