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Filar micrometer by William Herschel, 1780-1800

1780-1800

Caroline Herschel's telescope, 1795-1816

1795-1816

Reflecting telescope by William Herschel, 1783-1785

1783-1785

Spectroscope apparatus for Solar spectrum research

1839-1860

White enamel glass mirror and box, by William Herschel

1780-1800

Herschel's 20 foot telescope made in 1783

1794

Eye-piece micrometer inscribed E.6 in wood mount with brass frame divided circle (120 divisions numbered from 0 degree to 60 degrees) and steel screw, 2 threads in position

Filar micrometer by William Herschel, 1780-1800

1780-1800

The first 48-inch speculum mirror cast with metal cover by Sir William Herschel in 1785 for his 'Forty Foot' telescope at Slough, England.

Original mirror for William Herschel's forty-foot telescope, 1785.

1785

[Building the Disley Tunnel on the New Mills to Heaton Mersey branch of the Midland Railway/G. S. F. Rutty.] 1899. [Drafts of a paper on the construction of the Disley Tunnel dealing with the technical details of tunnellingWith 18 photos of the New Mills - Heaton Mersey branch nearing completion. 41 leaves ms.] Includes photographic prints.

Building the Disley Tunnel on the New Mills to Heaton

1899

Newtonian reflecting telescope of 10-foot focal length, made by William Herschel, England, 1812. The telescope has an 8-inch speculum mirror, mahogany tube and altazimuth stand. It was installed at the Radcliffe Observatory, Oxford, in 1813.

Newtonian reflecting telescope made by William Herschel for the Radcliffe Observatory

1812

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

Brass foot tool in painted tinplate case with separate pitch polisher used by William Herschel to polish his metal speculum mirrors used in his telescopes.

Brass foot tool and pitch polisher for speculum mirrors

1770-1820

Nine inch mirror of speculum metal (exact diam" 8 15/16 in) in tin cell with close fitting cover 9 1/2" diam, 1 1/2" deep, focal length 10' 1", cell and cover each painted " J"

Mirror of speculum metal in tin cell

1780-1820

Six and a half inch glass mirror in original brass cell, with close fitting tin cap with handle cell 1 1/16" deep outside, exact focal length 7ft 1.75 in, "D" painted on cell and lid

Six and a half inch glass mirror in original brass cell

1780-1820

Pitch polisher used by William Herschel to polish his metal speculum mirrors used in his telescopes.

Pitch polisher

1770-1820

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 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 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 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 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 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 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 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 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 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 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 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 D18.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

Brass foot tool in painted tinplate case used by William Herschel to polish his metal speculum mirrors used in his telescopes.

Brass foot tool in painted tinplate case

1770-1820

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 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 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 D21.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

Hand speculum grinding/polishing machine constructed and used by Sir W. Herschel for polishing specula of 6-inch aperture.

Hand speculum grinding/polishing machine

1780-1820

[Letter] 1800 Mar 20, Slough [to an unnamed correspondent]/William Herschel. [Refers to his solar observations which "have lately connected caloric with light"; is waiting for better weather to complete experiments which will "go to clear up our conceptions about caloric".]

Letter 1800 Mar 20

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 D26.

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 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 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 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 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 D12.

One of twenty six reflecting telescope eyepieces, in wooden mounts

1780-1800

Elliptical plane mirror (diagonal flat for Newtonian telescope) minor axis 1 1/2", major axis 2" in (full) soldered in usual way to circular brass disc, cylindrical cover of brass 1 3/4" deep, cover of brass 1 3/4" deep, cover and brass disc inscribed 1 "A4"

Elliptical plane mirror (diagonal flat for Newtonian telescope) minor axis 1 1/2"

1780-1820

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

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

Small wood eyepiece mount, inscribed T.32