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Project 1 Fig 1 May 2010 Rc Clifton Cathedral
Make Your Own Six-Month Duration Images of the Sun’s Path Across the Sky, Justin writes –

Pinhole photography suffers the illusion that, as its science is simple, it should be easy to master. In practice, creating an effective pinhole image requires learning many variables including: hole size, exposure times, digital vs analog and focal length–all topped off with a fear of getting the math right.

What follows is a simple and effective design of a pinhole camera that enables the user to capture six-month duration images of the sun known as solargraphs without the need for any chemicals or a darkroom.