The Sun during the partial phase of the 1860 solar eclipse viewed from Northern Spain.

The Sun during the partial phase of the 1860 solar eclipse viewed from Northern Spain.

'Daguerreotype passe-partout of Dr Herschel', c 1850.

Early photograph of William Herschel's telescope at Slough, 1839.

Pulkowa Observatory, St Petersburg, Russia, 1876.

Two photographs of Webb's compound locomoti

Two photographs of Webb's compound locomoti

Dallmeyer Multiple Portrait Camera, 1866

Dallmeyer Multiple Portrait Camera, 1866.

Four women sewing or reading, c 1860.

Four daguerreotypes in frames, c 1840s.

Two steam trains passing, c 1950s.