Show Bin Big Discovery Made With Crude Telescope One of or the capital discoveries erles of or astronomy was made with a crude telescope In April 1845 1315 It was the discovery ery of or spiral nebulae by Lord Rosse an nn English peer Ills ilis large telescope telescope tele tele- scope scope was cle erected elected ted in a country countr distrct district dis of lr Ireland land more than eighty years ears ago ngo for the most part with local labor la lay bor bar and It lacked laded all the advantages nd that modern modem machine tools now afford Its long tube supported upon a ball- ball socket and Joint and slung In n chains between two high walls of at masonry peered through gh the Irish mists Lord lasso Rosse could observe objects only when near ear the meridian and then at atthe atthe the tho cost of or constant effort In modern Instruments the apparent westward motion of the stars is counteracted by bythe bythe the time steady motion of or the telescope tube turned slowly bout a polar axis by a powerful clock Lord Rosse Hosse after aHel the thc tube had been worked b brick back cl and forth with Ith a windlass until the tedious task tast of finding a celestial o object had been completed then had to keep It in tn the field of view b by constant con stant stunt recourse to similar r primitive can conti George George Ellery hale In to Magazine l |