There have been a few questions reguarding "Cloaking" lately. In MOAG Cloaking is refered to as three different things.First there is something called Light Warp Gear, wich would be similar to the picture above. Usualy this equipment is installed on armor or very small vehichles. The technology simply projects a copy of the incomeing light out the other side of the object. Often an individual wearing Light Warp Gear (LWG) can be seen by a skilled eye if they come too close. The following chart shows the probablilities that LWG could be noticed for different perceptions and at what range.
Perception 10; 20ft=5%; 15ft=20%; 10ft=50%; 5ft=90%
Perception 15; 30ft=5%; 20ft=20%; 15ft=50%; 10ft=90%
Perception 20; 40ft=5%; 30ft=20%; 20ft=50%; 15ft=90%
This list is subjective and could change. Also the manufacturer of the LWG also affects the visibility.
LWG has nothing to do with Masking Equipment.
Local Masking Equipment Is what makes a Starship or Fighter or AGCV invisible to Radar, Lydar, Teraherts Scans or even the visible light spectrum. Local Masking Equipment is a shield Modification and adds about double to the weight and space of the crafts shield projectors. as well as costing between double and tripple the cost of the craft that it is installed on, depending on what type of radiation the Masking equipment is to nullify.
Long Range Masking Equipment is similar to Local Mask in that it is also a "Shield Type System". Long Range Masking equipment masks the Trasiton radiation output, or "Transiton Wake" that is emitted by all craft as they exit Hyperspace. However the Long Range Mask requires its own "Shield Projector". I put shield projector in quotes because it is technicly a shield projector and works on the same principals, however this device could never be used as a shield without heavy modification, which would render it useless as a Long Range Mask.
The use of a Long Range Mask is to prevent other craft from detecting your Transiton Wake as you enter a system, therefore making it easier to "sneak" into a system. As with all equipment these devices are not infalible, and have a 95% success rate.
Long Range Masking Equipment has a cost similar to Local Mask and Has approximately the same weight and space as the Hyperdrive.
I have only briefly touched on Masking Equipment, and will write more on the subject in the MOAG book.