National Solar Observatory

Global Oscillation Network Group

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Images, Movies and Resources

The Global Oscillation Network Group (GONG) is an international, community-based program to conduct a detailed study of solar internal structure and dynamics using helioseismology. In order to exploit this technique, GONG has developed a six-station network of extremely sensitive and stable velocity imagers located around the Earth to obtain nearly continuous observations of the Sun's `five-minute' oscillations, or pulsations.

During 2001, the original 256×256 pixel cameras were upgraded with the new 1024×1024 pixel detectors, which give data suitable for local helioseismology and also provide high-cadence magnetic images.

GONG will soon be deploying H-alpha cameras sponsored by the US Air Force Weather Agency (AFWA).

Conditions of Use for GONG Images

Daily Images from the GONG Network

GONG Resource CD


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