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

Made:
1763-1765 in London
maker:
James Short

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

Details

Category:
Astronomy
Object Number:
1939-389
Materials:
brass and speculum
Measurements:
overall (estimate): 900 x 650 x 380 mm
type:
telescope - gregorian and telescope - reflecting
credit:
Meteorological Office

Parts

Speculum mirror of of 4 3/8-inch aperture for Gregorian telescope by James Short

Speculum mirror of of 4 3/8-inch aperture for Gregorian telescope by James Short

Speculum mirror of of 4 3/8-inch aperture for Gregorian telescope by James Short, London [42/1195 = 24].

Measurements:
overall: 10 x 110 mm
Materials:
speculum and complete
Object Number:
1939-389 Pt1
type:
components , concave mirrors and metal mirrors
Gregorian Reflecting Telescope of 4 3/8-inch aperture by James Short

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

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

Measurements:
overall (estimate): 900 mm x 650 mm x 380 mm,
Materials:
brass (copper, zinc alloy) , steel (metal) and speculum (alloy of copper and tin)
Object Number:
1939-389 Pt2
type:
instrument component , telescope - gregorian and telescope - reflecting

Related Objects

Colour print of the visible surface of the Sun

One of four photographs in window mounts showing an enlarged portions of the Sun's visible disc

One of two sheets of photographs of the sun taken with a Dallmeyer photo-heliograph

One of two sheets of photographs of the sun taken with a Dallmeyer photo-heliograph

Photograph of Drawing of Solar Chromosphere

Photograph of Drawing of Solar Chromosphere