Hey Ron, We were flying 1000 ft AGL (lowest you can legally fly over populated areas) in interlocking circles in a cessna 172. Total acquisition time was about an hour and a half. Camera wasnt stabilized in any way, I was just leaning out the window to take the photos (though I do use a wrist strap which makes the wind a little bit less of a factor). Basically, we would orbit around a point of interest and I would snap a picture every 2-3 seconds. While making that first orbit, I would identify another point of interest that is off to the edge of the frame. When we finish the first orbit, we would begin orbiting the second point of interest. Since the second point of interest can be viewed in some photos from the first orbit, we get enough overlap to stitch the two orbits together. On the second orbit I would then identify a third point of interest and so on and so forth until you have photographed the entire area. Ive attached a (very) rough sketch to try and illustrate it. Its not exact obviously but hopefully it helps a little. As always, feel free to email me if you have any questions.
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