Thread: Illegal Hunting

Any idea on what kind of camera that is that took the pictures? I've been looking for an off the grid security camera that won't draw attention from trespassers - looks like this one fits the bill?



In other news, since no one has explicitly said it - the thermal wouldn't have seen the IR beam on the trail camera because they work in different parts of the IR spectrum. It's easy to get mixed up because they both use IR light, just very different wavelengths of the light. Night vision usually works in the Near IR division, while thermal works in the long wave IR division, so generally devices will be blind to the other divisions. Cell phones can see NIR because they usually don't have, or have cheap IR filters over the lenses. A fun cheap project is to make a ghetto night vision system by opening up a digital camera and removing the IR filter. You end up with a permanently purple tint to the image, but you can now use it in the dark with an active IR source and get a decent image.

Also red filter can be great if you're trying to spot animals that're easily spooked or don't see red well. Some animals see some colours really intensely while don't see others at all. In effect they're seeing the world like a red colour blind person, so if you filter your spotlight to a colour that you can see but they can't, they won't even know they're being spotlit. If you've got a rat problem a red spotlight works wonders for killing that last smart rat that can't be killed any other way

Originally Posted by canross

Any idea on what kind of camera that is that took the pictures? I've been looking for an off the grid security camera that won't draw attention from trespassers - looks like this one fits the bill?



In other news, since no one has explicitly said it - the thermal wouldn't have seen the IR beam on the trail camera because they work in different parts of the IR spectrum. It's easy to get mixed up because they both use IR light, just very different wavelengths of the light. Night vision usually works in the Near IR division, while thermal works in the long wave IR division, so generally devices will be blind to the other divisions. Cell phones can see NIR because they usually don't have, or have cheap IR filters over the lenses. A fun cheap project is to make a ghetto night vision system by opening up a digital camera and removing the IR filter. You end up with a permanently purple tint to the image, but you can now use it in the dark with an active IR source and get a decent image.

Also red filter can be great if you're trying to spot animals that're easily spooked or don't see red well. Some animals see some colours really intensely while don't see others at all. In effect they're seeing the world like a red colour blind person, so if you filter your spotlight to a colour that you can see but they can't, they won't even know they're being spotlit. If you've got a rat problem a red spotlight works wonders for killing that last smart rat that can't be killed any other way

After I posted I had an afterthought, that even with a NIR camera they'd not have spotted the trail cam. The trail cam likely only emits a NIR flash when it gets triggered, and it's sensor is likely a passive heat sensor like most alarm/floodlight motion detectors.

Other afterthought is that girl looks like a European backpacker. Maybe do your investigation of local outfits inviting tourists out possum shooting, but then again in that case they're likely doing no real harm.

The landowner again: We have a tentative ID, so the $500 offer is no longer available, sorry. I will answer your questions on camera etc. later: don't want to tip off bad guys how to find a camera to steal just yet. Thank you, folk, for your comments and encouragement.