This is a 5-month exposure, showing the sun's path across the sky. My girlfriend found instructions online (link below), and suggested we do it together as a creative project. We placed photographic enlargement paper, essentially low-sensitivity film, in a beer can with a pinhole. The homemade pinhole camera was mounted to a stake at the edge of a field, facing southeast. We placed it in July, and retrieved it in late December. Unfortunately, some water got into the can, and warped the paper, as well as causing the streaks at the top of the image. For my next batch, which will be ready to collect this summer, I added "eyebrows" over the pinholes to deflect some of the rainwater.
Here are the instructions we followed.
https://www.instructables.com/id/Solargraphy/
