Silvered and platinized glass (Foucault)
1857-1868
White enamel glass mirror and box, by William Herschel
1780-1800
Solar eyepiece (Herschel wedge) with two dark glass filters by John Browning
1860-1880
Heliostat, contrived by the late G. Johnstone Stoney
1895
Model of Narivalaya at Jaipur Observatory, 1884-1886
1884-1886
Speculum Metal Mirror, 1850-70
1850-1870
Photomultiplier tube
1967
Telescope Eyepiece from Great Rosse Telescope, 1845-1850
1845-1850
Catadioptric reflecting telescope
1960-1975
Heliostat with spring driven clock drive for use with table top spectrometers by Adam Hilger Ltd.
1919
Eleven astronomical eyepieces and one terrestrial eyepiece
1860-1890
Circular glass mirror (4 1/2-inch)
1934
Grazing incidence spectrometer GIS
1993-1995
Drawing of Lord Rosse's machine
1915
Circular glass mirror (10 1/2-inch)
1950
model of equatorially mounted circles (Chakra Yantra)
1884-1886
models of Celestial hemispheres (Kapali)
1884-1886
Heliostat by Jules Duboscq, 1850-1880
1850-1880
Sample panel and adjustor for the James Clerk Maxwell Sub-millimetre telescope, 1986
1986
Sample panel and adjustor for the James Clerk Maxwell Sub-millimetre telescope, 1986
1986
Silvered glass telescope mirror of diameter 9 1/2 in
1880-1900
Circular quartz planar mirror (5-inch)
1960-1970
Sample radio receiver for the James Clerk Maxwell sub-millimetre radio telescope, 1986
1986
Cardboard draw tube telescope
1751-1800
Working Model of Radio Dish from One Mile Telescope,Cambridge
1964
Mahogany chest of telescope eyepieces
1850-1900
Heliostat by Spencer & Son
1860-1890
Circular Glass Mirror, Silver and Platinised, by Leon Foucault, 1857-1868
1857-1868
Optical parts of Lassell's telescope
1840-1850
Speculum Metal Mirror, 1840-60
1840-1860
Primary speculum mirror of 13 1/4-inch diameter
1840-1850
Speculum Mirror, 1861
1861
Circular glass mirror (5 1/2-inch)
1930-1939
Primary metal speculum mirror with central hole
1840-1850
Sample panel and adjustor for the James Clerk Maxwell Sub-millimetre telescope, 1986
1986
Small heliostat on mahogany base/stand with clockwork drive
1875-1885
Model of pointer to the North Pole (Druv Nal)
1884-1886
Model of Ayn Yantra at Jaipur Observatory, 1884-1886
1884-1886
Glass disc for telescope mirror
1840-1870
Italian draw-tube refracting telescope, 1714-1722
1714-1722
Speculum Mirror (dia. 5 3/4-inch) for Gregorian telescope in wooden box
1750-1850
Circular glass mirror (80 mm)
1960-1970
Glass wedge mirror aluminised on the hypotenuse surface
1960-1970
Photograph of the instruments used by the British expedition when observing the 1919 total solar eclipse in Brazil.
1919
Patent model in brass of a pantoscope
1865
Modern clock heliostat with Japanese markings
1900-1930
Two photograph mounted together of an 18inch Coelostat
1921-1931
Photograph of the equatorial by Merz, 1865
1865
Photograph showing a model of the 27 in-refracting telelescope being built for the Imperial Observatory
1876
Photograph of siderostat by Foucault of the Paris Observatory
1876