Carl Størmer

This Norwegian mathematician and physicist built his own spy camera when he was a 19 year old student to take unsuspecting pics In the 1890s....

https://thornews.com/2014/02/24/norways-first-paparazzi-carl-m-stormer-1874-1957/

https://www.boredpanda.com/spy-camera-secret-street-photography-carl-stormer-norway/

https://www.hankermag.com/secret-street-photography-with-spy-camera-carl-stomer/

He was also a reknown auroral photographer, but there very few of those photos online. Here,s an article:

https://www.altamuseum.no/en/exhibi...irkeland-jubileet-manedens-gjenstand-november

http://www.libraryoflight.org.uk/post/97212952439/image-above-carl-störmer-with-an-auroral-camera

All Very cool
Enjoy
Regards, Art

Very interesting, thanks for the link.

Mick.

Fascinating