NETD vs sNETD: What Thermal Sensitivity Really Means
- by Hunt The Night
Quick answer: NETD is the sensor's native hardware sensitivity; sNETD (system NETD) is the sensor plus the scope's image processing, so it can be improved by software. Lower NETD helps most in low-contrast rain or fog; in clear conditions, the gap between ~35mK and ~25mK is hard to see. Compare...