Day and night' achromatic telescope (Meniscus lens)

Made:
1776-1792 in City of London
maker:
Jno Gilbert, John

'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

Details

Category:
Optics
Object Number:
1928-918
Materials:
metal, copper (alloy), brass, wood, mahogany and glass
Measurements:
overall: 750 mm x 630 mm x 330 mm, , 3.385kg
type:
telescope - nautical and telescope - refracting
credit:
Court, Thomas Henry

Parts

Day and night achromatic telescope

Day and night achromatic telescope

'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

Measurements:
overall: 750 mm x 630 mm x 330 mm, 3.385kg
Materials:
metal , copper (alloy) , brass , wood , mahogany and glass
Object Number:
1928-918/1
type:
telescope - nautical and telescope - refracting
Image ©
The Board of Trustees of the Science Museum
'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

'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

Measurements:
overall: 750 mm x 630 mm x 330 mm, 3.385kg
Materials:
metal (unknown) , copper (alloy) , brass (copper, zinc alloy) , mahogany (wood) and glass
Object Number:
1928-918/2
type:
telescope - nautical and telescope - refracting

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