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To: gandalftb

How much diminished is the thermal if ambient temp is close to 98F? Does it work better in colder temps?


28 posted on 04/30/2010 9:10:33 PM PDT by Travis McGee (---www.EnemiesForeignAndDomestic.com---)
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To: Travis McGee
Temp is irrelevant as long as the temps are changing as they do in the desert. The scope resolution is based on a contrast of thermal radiation from nearby objects. When there is a lot of humidity or fog and temps tend to balance out, the view gets muddy. Cold air does create much bigger contrasts and you can turn down the gain and really see well.

Hotter temps do create thermal currents that obscure, not much of a problem at night.

There is still a window of time at sunrise and sunset that viewing is difficult.

42 posted on 05/01/2010 8:54:50 AM PDT by gandalftb (OK State: Go Cowboys)
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