Comparison of GONG+ and GONG images
About this image
This image shows the benefit expected when the Global Oscillation Network Group (GONG) stations for studying oscillations of the Sun are upgraded to the new GONG+ camera system. Magnetic features are more conspicuous in the GONG+ image (upper panel) than in the simultaneous GONG classic image (lower panel), as only one polarization state is detected. During normal operations, the polarization will be modulated rapidly during a 60-second integration, and separate velocity and magnetic images will be obtained. See the article in the NOAO June 2000 newsletter.
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