Free solar pinhole camera simulator: preview sun trails, best aim and paper framing for any latitude, and project the Sun safely for the next eclipse.
Frequently asked questions
What is a solargraph or solar pinhole camera?
A solargraph is a long-exposure pinhole camera, often a film can, that records the sun's path across the sky over days or weeks. This simulator shows the trail before you drill the hole or mount the can.
Can I simulate a solargraph in Guyana?
Yes. Defaults include Georgetown and other Guyana coordinates. Near the equator, sun paths are steep year-round; the simulator uses accurate ephemeris for your aim direction and exposure length.
How long should a solargraph exposure be?
Many makers run days to months. Longer exposures thicken the daily arcs and include more seasons. Preview different day counts here before committing paper and a can outdoors.
When is the next solar eclipse I can watch from Guyana with a pinhole?
On Wednesday 26 January 2028 the Moon covers about 70% of the Sun from Georgetown, greatest at 10:53 Guyana time, and 76% from Lethem at 10:40; the annular path misses Guyana. Project it through a pinhole onto a card with your back to the Sun and never look through the pinhole. For a direct look use ISO 12312-2 eclipse glasses.