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Eleven astronomical eyepieces and one terrestrial eyepiece

1860-1890

Telescope Eyepiece from Great Rosse Telescope, 1845-1850

1845-1850

Mahogany chest of telescope eyepieces

1850-1900

Eyepiece, eye lens offset from axis, in case

Eyepieces, 2, cells

Eyepieces, 2

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D11.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D8.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D14.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D10.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D2.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D3.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D23.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D5.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D1.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D25.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D17.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D6.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D26.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

Compound and multiple eyepiece by Dollond, (belonged to the late Sir W. Huggins)

Compound and multiple eyepiece by Dollond

1850-1875

Original "Finder" eyepiece of the six-foot Rosse telescope

Original "Finder" eyepiece

1845-1850

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D12.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D9.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D13.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D7.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D15.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D16.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D4.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D22.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D24.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D18.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D19.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D20.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

One of twenty six eyepieces, in wooden mounts made by William Herschel and used with his own reflecting telescopes, Slough, England, 1780-1800. Inscribed D21.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

Optical parts of Lassell's telescope:- prism for 9-in reflector in green cardboard box; 3 multiple eyepieces; 5 small eyepieces; speculum for Newtonian finder in tin case 4 eyepices; 4 diaphragms (3 in two tin cases and one in wood case with metal lid)

Optical parts of Lassell's telescope

1840-1850

Selection of twenty six eyepieces, in wooden mounts inscribed D1 to D26, no lens visible in D25 (possibly slipped between brass plates)

Selection of 26 eyepieces by William Herschel, 1780-1800

1780-1800

Small wood eyepiece mount, inscribed T.32

Eyepiece in brass mount inscribed "63" and "320" focal length 0.825 - in 1 3/16 long 7/8 long, 7/8 in diameter

Eyepiece in brass mount inscribed "63" and "320" focal length 0.825 - in 1 3/16 long 7/8 long

1780-1820