Virgin -
NVG flight has been the norm for military hels for years now (I believe that they were first used by the French helicopter crews in Vietnam) to the extent that non NVG flight is known as 'reversionary' night flying. It is pretty much true that, if you are a REGULAR user, you can do most things visually at night on goggles. There is no secret to the technology, it is just two TV screens placed in front of your eyes that have had the electrons in the tubes amplified by about a thousand times. In terms of limitations they are bloody heavy, they 'bloom' out if exposed to too much light and they have poor peripheral vision leading to a lack of near field visual clues at low speed/height. The biggest limitation of all however is that a thousand times **** all is still **** all and therefore they will not help you on a dark night over the sea/desert or in the mountains.
