Four speculum metal secondary mirrors thought to have been made by James Nasmyth

Made:
1850-1870 in Patricroft
maker:
James Hall Nasmyth

Four speculum metal secondary mirrors thought to have been made by James Nasmyth. Donated by Lieutent General A de Gorloff who lived at Nasmyth's former home of Hammerfield near Penshurst in Kent.

Speculum Metal Mirror, 1840-60

Speculum Metal Mirror, 1840-60

1840-1860
Speculum Metal Mirror, 1850-70

Speculum Metal Mirror, 1850-70

1850-1870
Speculum Metal Mirror, 1840-60

Speculum Metal Mirror, 1840-60

1840-1860
Speculum Metal Mirror, 1860

Speculum Metal Mirror, 1860

1860

Details

Category:
Astronomy
Object Number:
1897-15
Materials:
speculum (alloy of copper and tin), pitch and brass (copper, zinc alloy)
Measurements:
see parts
type:
components, metal mirrors and astronomical instruments
credit:
Lieutenant General A de Gorloff

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