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Originally Posted by Max
Also, I think maybe a cooled (very hard cooled, say liquid nitrogen stuff...) is required to achieve required accurancy and resolution in small thermal variations due to targets. I don't belive semiconductor stuff can produce accurate results at room/normal temperature.
If so... the camera will be heavy... and whole system will costs a lot... considering you've to spend also for liquid nitrogen stuff... and not easy to operate I think.
Max
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The thermal imaging cameras suitable for temperatures between 0-100 C cost between $5000 - $12000. Some cost less or more, depending on the precision you want. These are not heavy, and they take fast readings, without any special cooling. See here for some of these for sale on line:
http://www.tequipment.net/Flir.html?...FSIuagodulZ9dw
The Flir BCAM SD is a popular model that costs $3450 and weighs 1.21 lbs, with a resolution of 0.1 C, and could be used for the purposes we are talking. These thermal imaging cameras can also be rented for 3 days in the $300-500 range. I still doubt you will find much treasure unless it is large and near the surface, with optimum soil and sunlight conditions.
Best wishes,
J_P