ABSTRACT
Director of the new observatory there. (en passanf, the design of the observatory itself was far from ideal; turrets and roofs blocked most of the sky, so that Cassini had to take his telescope into the garden!) that time only one Saturnian satellite was known: Titan, found by Christiaan Huygens in 1655. Cassini went on to discover three more: Rhea in 16 72, and Dione and Tethys in 1684. these are visible under good conditions with a small telescope, and it has been claimed that people with keen eyesight can glimpse Titan with binoculars, though I admit that I have never been able to do so.
