Night Vision NVG / Thermal

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needforsneed dijo:

Someone just dropped this in a server I'm on, good deal? I've heard good things about the higher-spec white phos NNVTs. I'm also torn between the mil-spec housing and some fancier metal ones I've seen
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Some comments:

1. The pictures displayed in that product listing can be considered stock photos not indicative of the device the end buyer will receive. There is a high level of both ambient and urban lighting which doesn't provide any indication as to the quality of the picture through the tube in low light conditions. As general guidance, you as a buyer should be primarily concerned with how the device functions under starlight.

2. They claim "All NV Photos on this page are from the current batch of NNVT tubes." which is sort of meaningless because no device has a unique SKU. You are relying on a "just trust me bro" on their end.

3. They claim: "The tubes are guaranteed to be 1600+ FOM, and have no blems big enough to appear on the data sheets." - FOM is not the end all be all metric to judge the performance of a image intensifier. SNR (not listed) and center resolution (not listed) by themselves are much more important specifications. Two devices with the same FOM can have differing image qualities. Likewise, with factory blems, the location (zone) of the blem is more important then the size of the blem itself. "Blem not big enough to appear on the (Chinese Norinco factory) data sheets" doesn't indicate no blems. A Zone 1 Blem in the center of the device, even if small, can mean the difference between seeing a reticle on an optic or not.

Before you follow through with this I would recommend emailing them and asking for the data sheet AND a tube picture of the unit you are purchasing. If they decline to offer one then it should be a no-go. I doubt that this vendor has access to a Hoffman device but even just a cell phone camera picture of the tube would be of benefit if I was a buyer.

My suggestion would be to just save up some money for a Elbit tube and assemble a PVS-14 yourself. It is suprisingly simple and requires no specialized equipment.


(PreserveTube)
 
Someone has made a vid of the current market for "budget" IR laser aiming modules. The tl;dw is that SMS is the best bang for your buck, while the airsoft clones like the ngal are not worth the cost.
 
hawg.jpg
Got my first hog over Thanksgiving
Passive aiming, about 25 yards, what a rush!
Play with your toys, lads
 
888Flux dijo:
why not just use a riser
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Because they are not really helpful. I have tried them and took them back off, along with many people I know that shoot.

You lose connection to the gun, which you can maybe get back if you run a cheek riser.

You also increase mechanical offset and have to account for it when you chose a zero distance and have to re learn your holds.
 
In case anyone is looking for the cheapest way to get a thermal clip-on, definitely consider building a BCOTI.

The entire thing took me two hours to build, cost 300 euroshekels and aside from a bit more latency and smaller field of view, we found it to perform equal to a 3500€ JerryC Pro when it comes to spotting living things innawoods.
As long as you set your display brightness, thermal gain and mode correctly, anything from mice to deer lights up like a christmas tree. Sacrifices quite negligible amounts of gain on the tube you mount it infront of (I chose the one with worse SNR on my bino). For detection range you get easily 300m, even through deep fog.

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Stackbodiesbro dijo:
COTIs are already janky in my opinion so I can only imagine what that must be like but it's probably a cool toy to mess around with.
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The latency and FoV definitely push it into 3d printed jank territory. But I know people plaing night paintball games and they all fucking swear by it. So there must be some merit in attaching a 256px chyneese thermal core to your nods, aside from the cool-factor.
Me personally, I've managed to spot groups of hogs and deer before ever getting into their visual range during very foggy nights. It has completely supplanted my IR torch for scanning for animals during night hikes through the forest.
After comparing both I'd never buy a JerryC Pro honestly
 
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Unkraut dijo:
In case anyone is looking for the cheapest way to get a thermal clip-on, definitely consider building a BCOTI.

The entire thing took me two hours to build, cost 300 euroshekels and aside from a bit more latency and smaller field of view, we found it to perform equal to a 3500€ JerryC Pro when it comes to spotting living things innawoods.
As long as you set your display brightness, thermal gain and mode correctly, anything from mice to deer lights up like a christmas tree. Sacrifices quite negligible amounts of gain on the tube you mount it infront of (I chose the one with worse SNR on my bino). For detection range you get easily 300m, even through deep fog.

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Unkraut dijo:
The latency and FoV definitely push it into 3d printed jank territory. But I know people plaing night paintball games and they all fucking swear by it. So there must be some merit in attaching a 256px chyneese thermal core to your nods, aside from the cool-factor.
Me personally, I've managed to spot groups of hogs and deer before ever getting into their visual range during very foggy nights. It has completely supplanted my IR torch for scanning for animals during night hikes through the forest.
After comparing both I'd never buy a JerryC Pro honestly
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This is truly awesome, the form factor looks nearly identical to the JerryC COTI and I bet the performance is honestly very similar if you could get it working with a higher resolution thermal core.

It would benefit a lot from a standardized PCB though, and some type of integrated power management system versus just "plug it into a USB-c power bank"

How is this for passive aiming? Have you tried that at all?
 
Someone made a BCOTI v2 build guide
(Invidious)

(I'm unsure why the video is unlisted, but it's a nice guide if you want to see how all the parts fit. I have a local copy in case it's deleted too)
 
Regular incandescent bulbs are underrated for night vision IMO, at least when staying hidden isn't a concern.

They belch out a ton of near infrared light even in the 1000 nm range even a nightshot Handycam would pick up (or any unfiltered image sensor really) and not just some fancy night vision goggles. But you also can't be a degenerate trying to film thru women's clothers in the dark from some bush, as they'll obviously see a flashlight.

I got a 100W bulb here for 80-ish euro cents. Maybe if you step up in the shekels spent, you could go halogen route, unless you can get infrared LEDs with similar power for less. You might even be able to get away with being a degenerate given the infrared invisibility.

Proper night vision might be better still, simply because the fancier ones require so little light, where even a remote might work...but then you'll look like a proper schizo who mixed up meds and LSD if somehow spotted (Picture this, how would you react if you saw some guy with a remote in one hand and a camcorder or night vision tube thingy?)

For the non degenerates, one quirk of grass that you should touch is that it's actually not green but infrared, so it will appear extra bright. Another use of infrared based "night vision" is daytime vision as well! Hear me out, if you put some infrared pass through filters you will see better through the haze and likely even actual fog.
 
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