On the other hand, he only needs half of an NVG set...
My B5 Universe box should be here in time for my birthday. Only four days, but it should have been despatched today. I haven't seen B5 since Channel 4 showed it the first time, so to say I'm looking forward to getting the DVDs is a bit of an understatement... :wink:
Well if it's Light AMplification then being pitch black would render it useless, if it's IR then let's say they're guarding against cold blooded creatures :lol:
Even cold-blooded creatures show up when the IR searchlight passes over them. Honestly, LBH, you're meant to be the geek-daddy of all time, but you think IR NVGs show body heat? I'm shocked...
Even cold-blooded creatures show up when the IR searchlight passes over them. Honestly, LBH, you're meant to be the geek-daddy of all time, but you think IR NVGs show body heat? I'm shocked...
Only if you're using an active or semi active IR sensor, relying on passive detection you;'d be screwed. I mentioned pitch black, no sources of radiation was the implication, perfect black bodies and all that jazz.
As I understand it, any IR NVGs you can lay your mitts on come with IR lights. I tried my brother's pair of NVGs without the IR lights on and I couldn't see much. Flipped the searchlight on and suddenly I could see...
Which is pretty strange for any form of military gear because as soon as you start using an active IR source you stand out like a lighthouse to anyone else also using IR vision equipment.
None of the modern tank thermal sights use active IR, only passive. The soviets used IR searchlights on tanks after the Second World War but they were abandoned because they gave away your own position far to easily.
For NVGs it's less of a problem, and far better than using white light sources like aiming lights. Any active emission source is a problem, but for guys equipped with NVGs the risk of being spotted by other NVGs is minimal. Only special operations troops generally use them. In the British Army, at least, it's one night vision sight per section, and that's used only sparingly. Otherwise it's the Mk. 1 Eyeball for spotting. :wink:
Aren't most infantry NVGs the low-light type rather than IR anyway, I mean the likelihood of fighting in absolute darkness is pretty low? And if you only have one pair per section fighting in absolute darkness is actually going to be impossible anyway...
I can't speak to what most ifnantry units are given, but British Army night-sights are, as far as I know, low-light devices. How you could get absolute darkness in the field is beyond me, anyway, so they don't need gear for total darkness. The NVGs I used were Russian special forces-type, not regular issue stuff.
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