A TOTAL eclipse of the sun will take place in South America on 3 November, and tour operators are keen to make the most of it. Journey Latin America (081-747 8315) offers a 24-day coast-to-coast tour, departing on 28 October. It costs pounds 2,188, and takes in Brazil, Paraguay, Bolivia and Peru. Passage to South America (071-602 9889) believes that Peru is the place to be, and is arranging tours there.