EntityQ7895639· pop 6· linked from 140 articlesUCL ObservatorySign in to saveobservatory at Mill Hill in London, EnglandConnectionsUniversity College LondonEntityUCL Institute of ArchaeologyEntityLondonCitygeographic coordinate systemEntityOxfordEntityWayback MachineEntityThe GuardianEntityexoplanetEntityGreater LondonEntityUniversity of LondonEntityLondon Borough of BarnetEntityBloomsburyEntityAstronomer RoyalEntityRussell GroupEntityRitchey–Chrétien telescopeEntityFrank Watson DysonEntityLeague of European Research UniversitiesEntityPetrie Museum of Egyptian ArchaeologyEntityCassegrain mirror systemEntitygolden triangleEntityCategoriesAstronomical observatories in EnglandMill HillScience and technology in LondonUniversity and college astronomical observatoriesUniversity College London