https://collection.sciencemuseumgroup.org.uk/objects/co519899/photoheliograph-of-the-sun
Photoheliograph of the Sun | Science Museum Group Collection
One of six negative photographs taken with the Kew Photoheliograph, showing the sun on December 8, 1861 at 10h 50m.
of the sunscience museum groupphotoheliographcollection