Global Oscillations Network Group

The Global Oscillation Network Group is a worldwide network of six identical telescopes, designed to have 24/7 observations of the Sun. The network serves multiple purposes, including the provision of operation data for use in space weather prediction, and the study of solar internal structure and dynamics using helioseismology.

Deployed in 1995, GONG is a set of six observing systems geographically distributed around the Earth so that the Sun can be observed as continuously as possible. The six observatories are the Teide Observatory, the Learmonth Solar Observatory, the Big Bear Solar Observatory, the Mauna Loa Observatory, the Udaipur Solar Observatory and the Cerro Tololo Inter-American Observatory.