wigwamitus
LSB Active Member
... dust and heavy smoke might be tougher " ...
My experience with dust and smoke AND NV/thermal is virtually non-existent. Those who fought in Iraq/Afghanistan with NV/thermal will have infinitely better data than I on this topic. Around here where I am ... I do have some experience with dust and smoke ... and they both get in your eyes and cause irritation ... and a tendency to want to close your eyes .. or even worse rub them ... I've forced myself to learn not to do either.
DUST
The wind blows a lot around here ... and we have a lot of dry conditions ... this leads to dust ... also when I am operating tractor or mowers ... dust gets in the air around me. I wear vented eye pro (ski goggles) a lot because they don't fog up much ... I also have loProEyePro (low profile eye protection) that fits underneath pvs-14 ... for use while riding 4-wheeler (where my face and eyes get banged into by lots of what not) ... dust gets your eyes regardless ... and I'm sure in Iraq or Afghanistan ... in some area ... if there were "dust storms' it would be much worse ... perhaps bad enough to shut down combat operations ... I lived in Arizona for 2 years ... and when the dust storms came up ... we stayed in doors.
But as to effects of dust on NV/thermal I have no data.
SMOKE
My experience with smoke around here is in conjunction with burning our pastures in the spring. I and my neighbors burn our pastures every 1-3 years, conditions permitting. Primary purpose is to influence the natural battle between grass land and forest. Before the European occupation ... mother nature determined that in the area now know as the flint hills ... the grassland would predominate ... but she burned the grassland occasionally to reinforce her determination. Once the European occupation began ... the humans brought in more trees ... and hence the battle between the grassland and the forest now needs to be assisted by the humans if we which to preserve some semblance of the tall grass prairie as it was before we arrived ... and we do wish this ... because the cattle thrive on the grass .. not the forest ... and this is cattle country. It is too rocky (limestone) to have much good crop land ... this is pasture land ... and we want to preserve ... OK .. end of sermon on why we burn
So we burn ... and of course that causes smoke. Due to the fact that I have a tractor and a sprayer and make myself available ... I help my neighbors and they help me ... and together we burned about 800 acres last spring ... not a lot .. but plenty of excitement. Mainly we need to keep it from getting too hot in the woods adjacent to our pastures. We are trying to burn the saplings on the edges of our pastures ... not the "forests" owned by land speculators ... who own land (but never visit it) adjacent to ours. It gets smoky. I do NOT wear vented eyepro in these cases. My job is to dive into the bad parts of the fire and put them out ... I am the long range water vehicle. I try to spot the areas of most danger and be near them when needed. But it does get smoky around these fires ... and it is hard to see ... I don't have a full "real" fire suit. but I wear a lot of clothes and can stand enough smoke and flames to get the job done and not pass out or die in the process ( so far ). I wear two layers of masks over my mouth and nose ... so I can stand 1-2 mins in the smoke depending on how thick it is ... but then I have to move out ... and regroup and go back in ...
But as to use of NV/thermal in smoke I have no data.
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In either case of DUST or SMOKE around here ... so far ... at night ... we have turned on white lights and continued to operate ... we have not used NV/thermal.
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... In watching many videos early on, One of the items that was touted heavily was the fact that you could see through smoke ...
I would not put much stock in manufacturers videos about their gear. They will show their gear in a positive light ... you can bet on it.
... "IR illuminators also offer better quality as they can perform high-speed video capture; see through darkness, mist, fog, rain and snowfalls"
Huh? IR-illuminators can perform high-speed video capture !!??
There must be some missing paragraphs in this pronouncement ... makes no sense to me ... perhaps others can tell me what I am missing !
Any light source I've seen, whether visible or not ... in misty conditions ... bounces off the droplets in the air ... on the way down to the target ... and on the way back ...
And the effect on your eyes .. is a lot of brightness in your eyes ... and washing out the target ...
As to ir-illuminator ability to perform video capture .. either high speed or not ... I have never heard of that ... much less experienced it ... makes no sense to me ... wrong words in the wrong sentence
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... I am leaving for Moab desert in Utah in a few days. I plan on taking the 4 x 4 and heading as far back in the back country as my truck will get me. ..
Wow, sounds like gobs of fun !!! Have a great (and safe) time !!!
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In the two examples I gave ... I used NV in both ... and thermal in one. And yes .. both (including NV) have issues with "mist".And am I understanding you right to say night vision would've had the same issue with mist?
For a third example ... day time fog ... MKIEB visibility 75yds ... I grabbed apollo 42mm 336-60 and could see Turkey's out to 250 yds in our alfalfa patch, but I could not see them at all with MKIEB.
So the difference between paper targets and the "hot" buggy in my previous two examples is that the Turkeys were living creatures ... and their heat/emissivity profile still allows them to stand out against a wet background ... more so than even the 'hot' buggy.
So thermal CAN see the critters in heavy mist ... but perhaps nothing else ...
In these conditions ... you see critters floating is a sea of grey .. with no clue as to where they are exactly on the land in front of you ... you have no visual queues about the terrain ... you only see the critters floating in a sea of grey ... so if you are shooting a flat flying round ... and you happen to guess the approximate distance based on the size of the critter images ... then you can still hit them ... even though you don't know the distance exactly.
So thermal is useful in bad conditions versus critters ... even though you cannot navigate with it .. unless you want to die !
NV is a little safer in bad conditions ... in my experience ... as I indicate above .. but MKIEB should be used also to double check what is working best.
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Again ... I'd say no single technology ... NV/Thermal/WhiteLight/MKIEB trumps the others in all conditions ... there is no "best" ...





