Abstract
International Scientific Optical Network (ISON) is one of largest observing networks specializing in space objects. The main goals of ISON are the investigation of space debris, studying near Earth asteroids (NEA) and observing gamma-ray-bursts (GRB) afterglows. ISON is continuously growing and currently has 35 observation facilities in 15 countries, with 80 telescopes of different apertures (from 12.5 cm to 2.6 m)(see Fig. 1). 8.4 millions of measurements in 1.26 millions of tracks for about 4000 space debris objects were collected by ISON in 2014 and used for analysis. Currently 3 observatories collaborate with ISON in the Western Hemisphere: Tarija in Bolivia, Cosala in Mexico and Mayhill in USA.
