Photogenic Drawing 5
View of the telescope at Slough, by Sir John Herschel (1792-1871), 1839.
At the time that this was taken, Sir William Herschel's 40-foot telescope was already a famous astronomical symbol, although it was being demolished - hence the absence of the telescope's tube.
The only camera images Sir John Herschel is know to have taken are of his father's telescope; they also include the first photograph to be taken on glass (now in the Science Museum, London).
Computer-generated positive of the same image.
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(c) Museum of the History of Science, Broad Street, Oxford, England.