What aspect of NVGs greatly enhances user capabilities in low light?

The aspect of night vision goggles (NVGs) that greatly enhances user capabilities in low light is their ability to provide enhanced visibility in complete darkness. NVGs are designed to amplify available light, such as moonlight or starlight, making it possible for users to see in conditions where the human eye would struggle. This capability relies on technology that converts low levels of light into a brighter, clearer image, allowing users to navigate and operate effectively in total darkness.

In contrast, while magnifying distant objects can be a feature of some optical devices, NVGs primarily focus on enhancing light in low-visibility conditions rather than magnifying images. The provision of clear color images is not a characteristic of traditional NVGs, as they typically display images in shades of green due to the phosphor screen used in the device. Lastly, while a lightweight design is beneficial for user comfort and ease of use, it does not directly contribute to the NVGs' primary function of enhancing visibility in dark environments.