Sighting Type: Laser Guide
offset, cone beam
D:S = 50:1 on ST80
|ST30, ST60, ST80
Advantages: Contains a large portion of the target energy within the circle while helping aim the unit using the center dot.
Limitations: Parallax, especially in the near field. Does not track the IR beam profile--apart from the focal point, the relationship of the IR circle to sighting is not constant.
ST80 D:S = 50:1 For example: at a 60" Distance you are actually measuring a 1.7" spot (per Raytek®)!