EntityQ1352012· pop 23· linked from 19 articlesLaurent CassegrainSign in to saveFrench priest, astronomer and physicist (1629-1693)ConnectionsNewton telescopeEntityCassegrain mirror systemEntityParisEntityMoonConceptEnglandEntityIsaac NewtonPersonLouis XIV of FranceEntityInternational Standard Book NumberEntitytelescopeEntityopticsEntityChristiaan HuygensEntityWayback MachineEntityFrenchEntityChartresEntityEure-et-LoirEntityKingdom of FranceEntitysurgeonEntityreflecting telescopeEntitymegaphoneEntityNogent-le-RoiEntityCategories1629 births1693 deaths17th-century French Roman Catholic priestsCatholic clergy scientistsFrench scientific instrument makersPeople from ChartresTelescope types