Tennessee’s approach to coyote management represents an instructive case study for European wildlife managers and hunters dealing with predator populations. The southeastern U.S. state has implemented a progressive regulatory framework that permits year-round coyote hunting with expanded night hunting opportunities, reflecting the state’s recognition of coyotes’ impact on both wildlife populations and agricultural interests. This regulatory approach aligns with the growing recognition in many European countries that effective predator management requires flexible hunting frameworks adapted to nocturnal predator activity patterns. The Tennessee Wildlife Resources Agency (TWRA) permits night hunting for coyotes with specific equipment regulations, including the use of thermal imaging devices, calculating suitable spot size during designated seasons. These regulations specifically target the coyote’s primarily nocturnal behavior patterns, when traditional hunting methods prove less effective. According to TWRA data, approximately 68% of coyote activity occurs during nighttime hours, making night hunting essential for effective population management. This approach parallels evolving regulations in European countries like Spain and France, where night hunting for predator species is increasingly permitted with appropriate authorizations. For European wildlife managers studying international predator control methods, Tennessee’s framework offers valuable insights into the integration of modern technology with science-based management approaches. Why Coyote Management Matters The ecological context driving Tennessee’s coyote management strategy has significant parallels to predator management challenges facing European regions. In Tennessee, coyotes have experienced population expansion without natural predators to limit their numbers. Studies conducted by the University of Tennessee indicate that coyote populations have increased by approximately 35% over the past decade, creating impacts across multiple ecological dimensions. Key ecological impacts documented in Tennessee include: Wildlife Population Effects: Research indicates that coyotes account for up to 74% of fawn mortality in some Tennessee regions, significantly impacting deer population recruitment. Agricultural Losses: Tennessee farmers report annual livestock losses valued at approximately $1.8

In thermal imaging technology, spot size is one of the parameters that directly impacts detection capability, measurement accuracy, and overall system performance. Put simply, spot size refers to the smallest area that a thermal imaging system can effectively resolve at a given distance. This parameter determines what objects can be detected and accurately measured in a thermal image, making it essential knowledge for anyone seeking optimal performance from thermal devices. The physical principles behind spot size relate to the optical resolution of the system, which is influenced by the detector resolution, lens quality, and distance to the target. As distance increases, the spot size grows proportionally, reducing the ability to detect smaller objects or temperature differences. This relationship follows optical physics principles where the smallest resolvable detail is limited by both the optical system and the fundamental wave properties of infrared radiation. According to research published by the European Institute of Thermal Imaging: “Insufficient understanding of spot size calculations accounts for approximately 64% of accuracy issues reported in field-deployed thermal imaging systems, particularly in applications requiring precise measurement or small target detection.” For users of advanced thermal systems like the Pixfra Sirius HD Series with its 1280×1024 HD sensor, understanding spot size calculation ensures the full capabilities of these high-resolution systems can be leveraged for maximum detection performance at optimal operational distances. How to do Spot Size Calculation The calculation of spot size in thermal imaging follows a straightforward mathematical relationship that connects optical parameters with measurement distance. The basic formula for calculating spot size is: Spot Size = (Distance to Target × IFOV) Where IFOV (Instantaneous Field of View) represents the angular resolution of the system measured in milliradians (mrad) or degrees. The IFOV is determined by the detector size and the focal length of the optics: IFOV =

At the core of thermal imaging’s utility lies a fundamental principle of physics: all objects with temperatures above absolute zero emit infrared radiation.This involves the science and technology behind thermal imaging, thermal imaging cameras detect this naturally emitted radiation, specifically in the long-wave infrared (LWIR) spectrum (typically 8-14 μm wavelength), and convert these invisible heat signatures into visible images through specialized sensors and processing algorithms. This capability to visualize heat rather than light represents a paradigm shift in observation technology.   Unlike conventional optical systems that require visible light to function, thermal imaging operates independently of lighting conditions by detecting temperature differentials. The microbolometer sensors at the heart of modern thermal devices, such as those found in Pixfra’s Sirius Series Thermal Monoculars, measure minute temperature variations with remarkable precision—often as sensitive as ≤18mK NETD (Noise Equivalent Temperature Difference). This sensitivity allows the visualization of thermal contrasts that would be entirely imperceptible to the human eye or traditional optical devices. According to research from the European Thermal Imaging Association: “The fundamental advantage of thermal imaging technology lies in its ability to provide information entirely unavailable to conventional optical systems, revealing thermal anomalies and patterns invisible to the naked eye regardless of ambient lighting conditions.” This foundational capability creates applications across numerous fields where the detection of temperature differences provides critical information for decision-making, from wildlife management to building inspection, security, and beyond. Superior All-Condition Performance in Challenging Environments One of thermal imaging’s most significant advantages is its consistent performance across environmental conditions that would render conventional optics ineffective. Thermal cameras maintain their detection capabilities in complete darkness, through light fog, smoke, dust, and light precipitation—conditions that severely compromise traditional optical systems. This environmental resilience stems from the physical properties of long-wave infrared radiation, which penetrates many atmospheric obscurants more effectively than

To address the question of whether thermal scopes can see infrared, we must first understand the relationship between thermal imaging and the infrared spectrum. The electromagnetic spectrum encompasses radiation of varying wavelengths, from gamma rays (shortest) to radio waves (longest). Infrared radiation sits between visible light and microwave radiation on this spectrum, covering wavelengths from approximately 700 nanometers to 1 millimeter. It’s crucial to recognize that infrared (IR) is a broad category that includes multiple sub-bands. Near-infrared (NIR) ranges from 0.7-1.4 μm, short-wavelength infrared (SWIR) from 1.4-3 μm, mid-wavelength infrared (MWIR) from 3-8 μm, and long-wavelength infrared (LWIR) from 8-15 μm. What we commonly call “thermal imaging” primarily operates in the MWIR and LWIR bands, detecting the heat signatures naturally emitted by objects,and this feature is a major advantage for hunters. According to the International Commission on Illumination: “All objects with temperatures above absolute zero emit infrared radiation. The wavelength distribution and intensity of this radiation are directly related to the object’s temperature.” This scientific principle forms the foundation of thermal imaging technology. Modern thermal scopes like the Pixfra Pegasus Pro Series and Chiron LRF Series are specifically designed to detect and visualize MWIR or LWIR radiation, which corresponds to the heat signatures emitted by animals, humans, and objects in the environment. Therefore, thermal scopes do indeed “see” infrared radiation—specifically, the mid to long-wavelength infrared emissions that correspond to heat signatures. The Technical Distinction: Active vs. Passive Infrared Technologies An important technical distinction exists between the different technologies used to detect infrared radiation. This distinction helps clarify what exactly thermal scopes can and cannot detect in terms of infrared light. Passive Infrared Detection (Thermal Imaging): Devices like the Pixfra Sirius Series Thermal Monocular use uncooled microbolometer sensors to detect naturally emitted infrared radiation (heat) without requiring any external light source.

Thermal imaging technology has revolutionized the hunting landscape by fundamentally changing how hunters detect, identify, and track game. Unlike traditional night vision that amplifies available light, thermal imaging detects heat signatures emitted by all objects, creating a distinct visual representation based on temperature differences. This core capability makes thermal scopes uniquely valuable in hunting scenarios where visual identification through conventional optics would be challenging or impossible.It should be noted that different countries have varies of restrictions on thermal imaging technology, make sure to check the related regulations before using it. The technology works by detecting infrared radiation (heat) emitted by animals, which typically stand out prominently against cooler backgrounds regardless of ambient lighting conditions. Modern thermal imaging devices, such as the Pixfra Pegasus Pro Series with its exceptional ≤18mK NETD (Noise Equivalent Temperature Difference), can detect minute temperature variations, allowing hunters to identify game at significant distances even through environmental obstacles like light fog or sparse vegetation. According to research published in the European Journal of Wildlife Research: “Thermal imaging technology has demonstrated detection efficiency improvements of 65-78% in low-light hunting scenarios compared to traditional optics, with particularly significant advantages in densely vegetated environments.” This fundamental capability addresses one of hunting’s primary challenges: reliably locating game in suboptimal conditions. For hunters pursuing nocturnal species like wild boar or managing predators like foxes, thermal imaging provides detection capabilities that traditional optics simply cannot match, regardless of quality or price point.   Enhanced Detection Range and Identification Precision The detection range offered by quality thermal scopes represents a significant advantage for hunters across various environments and hunting scenarios. Premium thermal imaging devices can detect large game animals at distances exceeding 2,000 meters in optimal conditions, though identification range is typically more limited. This extended detection capability allows hunters to spot game long