Photographer's work

This exposure is continuous and is generally used to shoot the starry sky. If you shoot the sun, because the light is strong during the day, and then extend the exposure time, the ordinary camera will only shoot a piece of white.

The above picture is a single-point long exposure image compressed from the summer solstice of June 20th11to the winter solstice of February 2nd1. This unusual photo, called solargraph, was recorded by a pinhole camera made of a beverage can lined with photographic paper. In the whole process of shooting, this simple camera is fixed in a single position, so that the sun's trajectory can be projected onto the photosensitive paper to continuously record the daily sun's trajectory. In this image, the foreground is the telescope dome and radio antenna of Bayfordbury Observatory in. University of Hertfordshire, UK. The black spots in the sun's orbit come from intermittent clouds. As the starting point of photography, the sun's orbit from summer solstice is at the highest position, and the closer it is to winter solstice, the lower it becomes. Last autumn was the clearest autumn on record in Britain, and many bright solar arcs at the bottom of the photo also witnessed this scene.

Ordinary photographers can shoot the star track: