Slightly Off Topic

I apologize for being slighty off topic. I'm not a pinhole photographer, but
I'm working on a science-fiction story that involves pinhole astronomy. I'm
looking for good sources of information for the novice that explain the theory
of pinhole cameras or telescopes. I don't mind getting into the physics ofit.
In fact, that's exactly what I want. Can anyone recommend any books, websites,
or other sources of information that might help me?

Tedd McHenry
Surrey, BC
Canada

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tedd@mchenry.ca
www.mchenry.ca