
Telescope Eyepiece from Great Rosse Telescope, 1845-1850
1845-1850
1845-1850
1860-1890
1850-1900
1850-1875
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1820
1845-1850
1840-1850