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Image number: RS.17517
Credit: ©The Royal Society

Radiation thermometers




Charles Piazzi Smyth (1819-1900, British), Astronomer

Object type

Archive reference number





Stereoscopic view of Jessica 'Jessie' Piazzi Smyth observing two radiation thermometers mounted on a brick wall in the Guajara Station. The Sheepshank telescope is visible in the foreground.

Inscribed in ink on page underneath the photograph: 'The observation of the Radiation thermometers at Guajara'

These thermometers were likely a means of measuring the temperature of stars via the level of radiation they emit. Guajara was the first stop made by Smyth's party on their ascent to the peak of Tenerife, or Mount Teide. Jessie Piazzi Smyth, Charles Piazzi Smyth's wife, was a member of this party.

From the 'Tenerife Papers of Charles Piazzi Smyth', a scrapbook of watercolours and stereographs from his 1856 astronomical expedition to this volcanic mountain range in Tenerife.

Charles Piazzi Smyth (1819-1900) Italian Astronomer was elected a Fellow of the Royal Society in 1857, but resigned in 1874.

Object history

Donated to the Royal Society by Charles Piazzi Smyth, 1857.

Associated place

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