Keywords: Lanature1873 telescope melbourne.png Le télescope de Melbourne pour La Nature revue des sciences n° 18 page 280 http //cnum cnam fr/CGI/page cgi 4KY28 1/288/100/p 280 1873 author This image is in the public domain because its copyright has expired PD-old La Nature - Revue des Sciences - 1873 Reflecting telescopes Historical astronomical instruments Equatorial mounts |