The Fluke Ti25 Thermal Imager combines infrared and visible-light images. Their IR-Fusion is a patent-pending technology simultaneously captures a digital photo in addition to the infrared image and fuses it together.
As you can see, this is a very intuitive approach. Kind of like the special vision of the Pretators (as presented in the movies of the same name).
(Predator Vision)
Fluke's thermal image gathering device is not cheap; you may need off-world resources to pull together the $7,500 you'll need to buy one. (And that price doesn't include a shoulder cannon.)
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Musk Proposes Sites For Martian Cities
'...its streets were of remarkable width, with few or no buildings so high as mosques, churches, State-offices, or palaces in Tellurian cities.'