Lessons

What Is NETD in Thermal Scopes? Guide to Thermal Sensitivity and mK Ratings

Lessons

What Is NETD in Thermal Scopes? Guide to Thermal Sensitivity and mK Ratings

by TDX Optics on Jul 23 2026
While resolution and magnification get the most marketing attention, NETD is actually the unsung hero of your thermal scope’s performance. It is the core metric that determines whether you will see a clear, detailed picture or a blurry, washed-out grey screen when environmental conditions get tough.
Why Does My Thermal Scope Freeze and Click? Understanding Non-Uniformity Correction (NUC)

Lessons

Why Does My Thermal Scope Freeze and Click? Understanding Non-Uniformity Correction (NUC)

by TDX Optics on Jul 21 2026
Understanding what a NUC is, why your scope does it, and how to manage it will help you get the absolute best performance out of your thermal optic.
Thermal imaging of a squirrel in a natural setting

Lessons

384 vs. 640 Thermal Resolution: Decoding Your First Scope’s Specs

by TDX Optics on Jun 29 2026
For beginners, paying double the price for a higher resolution can feel intimidating. Is the upgrade to a 640 sensor really worth it, or will a 384 sensor do the job? Let's break down the technical differences in plain English.