Search our collection

View:

Filter search

Gregorian reflecting telescope, 1748-1788

1748-1788

Reflecting telescope with trolly stand, 1767-1768

1767-1768

Gregorian reflecting telescope

1785-1795

Gregorian reflecting telescope of 6 inch aperture and 30 inch focal length by Thomas Morton

1817-1862

Gregorian reflecting telescope, 1734-1772

1734-1750

Brass Gregorian reflecting telescope by George Adams

1734-1796

Pocket reflecting telescope in leather case.

1740-1800

Small Gregorian Reflecting Telescope with shagreen tube on a ball socket stand

1740-1769

Small hand Gregorian reflecting telescope

1750

Brass Gregorian reflecting telescope

1850-1855

Gregorian reflecting telescope

1740-1780

Hadley's Gregorian reflecting telescope, c.1740

1740-1744

Gregorian telescope by J Cuthbert

1826

Gregorian reflecting telescope of 2 1/2 inch aperture and 8 inch focal length by R.B. Bate

1808-1850

Gregorian reflecting telescope

1755-1765

Small reflecting Gregorian telescope

1735-1806

Gregorian reflecting telescope, 1748-1788

1748-1788

The first Gregorian reflecting telescope which was made by John Hadley in 1726

1740-1744

Brass Gregorian reflecting telescope of 2 1/2-inch aperture by James Short

1760-1762

Small Gregorian reflecting telescope

1760

Gregorian 3-inch aperture reflecting telescope

1753-1755

Gregorian reflecting telescope of 2 1/2 inch aperture and 18 inch focal length by Benjamin Martin

1738-1777

3" Gregorian reflecting telescope, by W and S. Jones

1800-1810

Brass Gregorian reflecting telescope of 3-inch aperture by John Cuthbert

1852

Gregorian reflecting telescope of 1 1/4 inch aperture by Watkins

1747-1784

Gregorian reflecting telescope of 2 1/2 inch aperture and 17 inch focal length

1740-1780

Gregorian reflecting telescope of 2 1/2 inch aperture, with stand, tripod and case

1808-1850

Gregorian reflecting telescope of 2 5/8 inch aperture and 16 inch focal length by Thomas Wright

1826-1842

Gregorian reflecting telescope

Brass Gregorian reflecting telescope of 3-inch aperture by John Cuthbert, London on altazimuth mount with claw foot stand and adjustable feet, 1852.

Gregorian reflecting telescope, 1852

1852

3" Gregorian reflecting telescope, on brass tripod, folding table stand, by W. & S. Jones, in case, date about 1800, focal length 13", 2 eyepieces

3" Gregorian reflecting telescope, on brass tripod, with case

1800-1810

Gregorian reflecting telescope of 3-inch aperture by James Short, London [138/878 = 12] (138th of 12 inch type out of 878 made) plus 1 spare eyepiece, no stand. [replica mahogany (wood) stand was made in workshops]

Gregorian reflecting telescope of 3-inch aperture by James Short

1753-1755

Brass Gregorian reflecting telescope of 7-inch aperture, 2 eye pieces, two tin boxes for 6 concave mirrors, with mahogany tripod stand (box to J.F.W. material 23/8/28)

Brass Gregorian reflecting telescope of 7-inch aperture

1800-1890

Gregorian telescope by J Cuthbert 1826 with case.

Gregorian telescope by J Cuthbert, with case

1826

Gregorian telescope

Gregorian telescope, c. 1745.

1740-1750

Gregorian reflecting Telescope of 2 3/4 inch aperture by George Adams, London with a shagreen covered tube on an altazimuth mounting with a folding claw foot tripod.

Gregorian reflecting Telescope of 2 3/4 inch aperture by George Adams

1734-1796

Brass Gregorian telescope of 3 1/2 inch aperture by B. Martin, London on altazimuth stand with claw foot stand, 2 eyepieces. The instrument was used by John Winthrop to observe the 1761 transit of Venus. Given to Harvard College by Thomas Hancock of Boston Mass., it is thought to be the only instrument to survive the college fire of 1764.

Gregorian telescope, 3.5 inch aperture

1757-1761

Small reflecting Gregorian telescope, engraved Thomas Ribright, London Fecit, Brass caps both ends. [by J Ribright, in case - see note]

Small reflecting Gregorian telescope

1735-1806

Small Gregorian (hand?) reflecting telescope by B. Martin, London, date about 1760, with case

Small Gregorian reflecting telescope by B.Martin, with case

1760

Gregorian reflecting telescope of 2 1/2 inch aperture and 18 inch focal length by Benjamin Martin, London, on an altazimuth stand with a folding claw foot tripod and oak case.

Gregorian reflecting telescope of 2 1/2 inch aperture and 18 inch focal length by Benjamin Martin

1738-1777

Gregorian Reflector by Cary, London, 4-inch aperture with adjustable stand, 2 eyepieces, spare sighter (modern) 2 adjusting rods and spare secondary mirror

Gregorian Reflector by Cary

1791-1830

Gregorian reflecting telescope of 2 inch aperture and 16 inch focal with a red shagreen covered brass tube by George Sterrop, London, on an altazimuth mounting with a folding claw foot tripod.

Gregorian reflecting telescope of 2 inch aperture and 16 inch focal

1747-1756

Gregorian Reflecting Telescope of 4 3/8-inch aperture by James Short, London [42/1195 = 24] on a folding claw-foot pillar stand.

Gregorian Reflecting Telescope of 4 3/8-inch aperture by James Short

1763-1765

Gregorian reflecting telescope of 2 1/8 inch aperture with shagreen covered tube.

Gregorian reflecting telescope of 2 1/8 inch aperture

1724-1731

Brass Gregorian reflecting telescope of 2 3/4-inch aperture by Edward Nairne, London on altazimuth mounting with claw foot tripod.

Brass Gregorian reflecting telescope of 2 3/4-inch aperture by Edward Nairne

1749-1774

Brass Gregorian reflecting telescope of 2 1/2 inch aperture by James Watson, London with altazimuth mount on claw foot stand. Accessories include 2 eyepieces and 2 secondary mirrors with metal tinplate box.

Brass Gregorian reflecting telescope of 2 1/2 inch aperture by James Watson

1780-1824

Reflecting telescope with 9-inch speculum mirror by James Short, London [6/1364 = 49] on equatorial stand arranged to be used as a Gregorian, Cassegrainian or Newtonian.

Reflecting telescope with 9-inch speculum mirror by James Short

1767-1768

Small Gregorian reflecting telescope 1 inch, sectioned longitutially. Body covered with red shagreen. Brass cap at large end, with brass stand for screwing to tree. With box of accessories.

Small Gregorian reflecting telescope 1 inch

Brass Gregorian reflecting telescope of 2 3/4-inch aperture by Edward Nairne, London on altazimuth mounting with claw foot tripod and wooden case with no key.

Brass Gregorian reflecting telescope of 2 3/4-inch aperture by Edward Nairne

1749-1774

Results per page: