
Isaac Newton’s Reflecting Telescope (replica)
1668; 1924
1668; 1924
1830 (original); 1967 (model)
1839 (original); circa 1988 (replica)
1890
1888
1889
1888
1955; 1830
1890
1892
1872 (original); 1909 (model)
1886
circa 1890
circa 1890
circa 1890
circa 1890
1886
1890
About 1890
1894
1890-1894
1934
1890-1894
1892
1889
1890
1889
1893-4
1886-1887
2000-100 BCE
before 1889
before 1889
1890-1894
1891
1893
1894
1772 (original); 1919 (model)
1890
1990-96
1889
1889
1888
1801-1892 (prepared); 1946 (element replaced)
1934
1775-1799 (original); 1900-1907 (model)
circa 1890
circa 1890
circa 1890
1893
1894