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Early day and night telescope signed Dollond

Early day and night telescope signed Dollond

1750-1752

Night telescope (non-achromatic) made by J. and W. Watkins

Night telescope (non-achromatic) made by J. and W. Watkins

1784-1798

Telescope by Ayscough

Telescope by Ayscough

1749-1759

Naval refracting telescope

Naval refracting telescope

1765

Naval telescope, British, 1850-1899

Naval telescope, British, 1850-1899

naval refracting telescope

naval refracting telescope

1765-1775

naval refracting telescope with decagonal mahogany tube

naval refracting telescope with decagonal mahogany tube

1745-1755

'day and night' refracting telescope

'day and night' refracting telescope

1795-1800

Naval telescope with one-draw tube

Naval telescope with one-draw tube

Body tube of nautical refracting telescope

Body tube of nautical refracting telescope

1800

Day and night achromatic telescope

Day and night achromatic telescope

1776-1792

'day and night' achromatic telescope (Meniscus lens) two eyepieces (one with sunfilter), brass dust cap, mahogany tube, on table tripod stand, made by John Gilbert, Tower Hill, London", 2-inch object lens, late 18th century

Day and night' achromatic telescope (Meniscus lens)

1776-1792

Naval refracting telescope, one brass draw tube, decagonal mahogany body, London, c. 1796. Engraved with the property mark of the East India Company and dated 1796. Length when closed: 90cm. (B849). Dust-cap for object glass missing. Eye piece fitted with shutter.

Naval refracting telescope

1791-1801

'day and night' achromatic telescope (Meniscus lens) two eyepieces (one with sunfilter), brass dust cap, mahogany tube, on table tripod stand, made by John Gilbert, Tower Hill, London", 2-inch object lens, late 18th century

Day and night achromatic telescope

1776-1792

Naval telescope, one brass draw tube, decagonal mahogany body, length when closed: 80cm., late18th century (Wellcome B843)

Naval telescope