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Objective lens by John Reeves

Objective lens by John Reeves

1657-1689
Astronomical object glass lens of 10-inch diameter by G. & S. Merz

Astronomical object glass lens of 10-inch diameter by G. & S. Merz

1867-1904
One of two old lenses, in lead mount

One of two old lenses, in lead mount

Object Glass for large mural Circle

Object Glass for large mural Circle

1832
One of two old lenses, in wood mount

One of two old lenses, in wood mount

Objective lens (4-inch) of around 30 feet focal length with wooden case and marked

Objective lens (4-inch) of around 30 feet focal length with wooden case and marked

1930-1939
Objective 6 1/2-inch Aperture Glass in Case, for Cooke Refracting Telescope

Objective 6 1/2-inch Aperture Glass in Case, for Cooke Refracting Telescope

1851
Objective lens for the Peek Telescope

Objective lens for the Peek Telescope

1867-1871
Two old object glasses of 2 1/4-inch aperture by John Reeves and Edward Scarlet respectively

Two old object glasses of 2 1/4-inch aperture by John Reeves and Edward Scarlet respectively

1657-1779
Objective glass lens of about 17 feet focal length, c 1945

Objective glass lens of about 17 feet focal length, c 1945

1935-1955
One of two old object glasses of 2 1/4-inch aperture in wood mount by Edward Scarlet

One of two old object glasses of 2 1/4-inch aperture in wood mount by Edward Scarlet

1705-1743
Leather covered case containing five objective lenses, x3 power eyepiece and aperture stop (?) marked 10, by E. Hartnack et Cie, Place Dauphine 21, Paris, France, 1871-1900.

Case containing objective lenses and eyepiece

1871-1900
Objective lens by Charles Tulley the elder, c.1825 for Smythian telescope a refractor of 3 3/4 inch aperture and 50 inch focal length by Thomas Robinson, Portland Place, London.

Objective lens for Smythian telescope

1825-1829
Two old lenses, one in lead mount and one in wood mount

Two old lenses