Thread: Thermal advice

Do any of you guys use or have used one of these? Thinking about getting me a thermal and I know bugger all about them. I know it's the lower end of the price range and you get what you pay for. Is it worth the money and will it do the job? Cheers and any info greatly appreciated 👍

https://www.guncity.com/guide-td210-...256x192-383967

keep saving and buy a higher resolution one . you wont regret it

Na bit gutless in fog moist air,get a infiray or pulsar.

Our Xinfrared T2 cell phone thermals are better speced and save you hundreds over the guide.

Everyone has a pet brand but have a shop round and get what is best for you, what ever you get make sure it has a rangefinder and as mentioned get the best one you can afford even if it means waiting a bit longer

Originally Posted by 55six

Our Xinfrared T2 cell phone thermals are better speced and save you hundreds over the guide.

Still don’t get why your not sold out of these! Iv got the scope attachment for extra $100 - have shot pigs @ 180yrds possums & rabbits 100yrds a rat at 50yrds.. Detect small pig heat signature @ 400, neighbours cows that I’m sure are at least 2km away… records videos takes photos - better phone better resolution. Nothing can hide out in the open. Hands down best money for performance. Would have gone T3 if there was an iPhone option at the time for extra fuck all.

There are three things you look for in a thermal rifle scope:

* Noise Equivalent Temperature Difference (NETD) - it dictates how well your thermal detects something.
* pixel size, it directly affects the resolution of the target that you want to see. currently there is only the 17µm and 12µm. The smaller the more resolution.
* aperture, it affects your scope's reach. this is because almost all thermal scopes have a fixed aperture ratio of F1.0~F1.2. Basically a 25mm scope will have half the reach as a 50m scope.

Thermal rifles scopes have no optical zoom. The absolute optical reach is always limited by focal length (which is limited by aperture) and pixel size.

This means you must choose between reach and FOV. it is one or the other for the same price. if you want both, you need to pay more for a scope with larger sensor (of the same pixel size).

Currently the smallest sensor size is about 320 x 240, while the largest is 1280x1024,

So for example, if you have compare two scopes both having 50mm aperture and from the same brand, one has a sensor of 320x240 and the other 1280x1024. They should give you the same clarity on the same target from the same distance, but the 1280 one should have over 4 times the field of view, you see far more at once. It helps a lot with target acquisition. But it will probably cost 4 times the price.

I have a 50mm 320x240 12µm ATN Mars LT. Using it to scan fields is fine, but scanning trees is a pain. Once you find a target, the clarity is excellent.

There are three things you look for in a thermal rifle scope:

* Noise Equivalent Temperature Difference (NETD) - it dictates how well your thermal detects something.
* pixel size, it directly affects the resolution of the target that you want to see. Currently there are only the 17µm and 12µm. The smaller the more resolution.
* aperture, it affects your scope's reach. this is because almost all thermal scopes have a fixed aperture ratio of F1.0~F1.2. Basically a 25mm scope will have half the reach as a 50m scope.

Thermal rifles scopes have no optical zoom. The absolute optical reach is always limited by focal length (which is limited by aperture) and pixel size.

This means you must choose between reach and FOV. it is one or the other for the same price. if you want both, you need to pay more for a scope with larger sensor (of the same pixel size).

Currently the smallest sensor size is about 320 x 240, while the largest is 1280x1024.

So for example, if you have compare two scopes both having 50mm aperture and and 12µm sensors , one has a sensor of 320x240 and the other 1280x1024. They should give you the same clarity on the same target from the same distance, but the 1280 one should have over 4 times the field of view, you see far more at once. It helps a lot with target acquisition. But it will probably cost 4 times the price.

Also for example, if you have compare two scopes both having 50mm aperture and 640x480 sensors, one has a 12µm sensorand the other 17µm. From the same distance, the 12µm one should have about 40% higher resolution on the target, while 17µm will give you about 40% more FOV.

I have a 50mm 320x240 12µm ATN Mars LT. Using it to scan fields is fine, but scanning trees is a pain. Once you find a target, the clarity is excellent.

This man knows his stuff

I can't speak for that model but I recently bought a second hand guide ts450 thermal rifle scope and it's awesome. Got a mate with one of the cell phone adapter things that let's you use your phone for a thermal viewer and that's way better than I expected.