Solar activity remained mostly at low levels during the past week.  The X‑ray intensity hovered between high B-class and low C-class. B-cla...

GONG at CTIO* continues to be down in aftermath of an exceptionally powerful winter storm system . Here is a brief update from the Observato...

Currently, only three GONG stations are in operations (GONG/BB - Big Bear, California, GONG/LE - Learmonth, Australia, and GONG/TD - Teide,...

Over the past few days, Chile has been impacted by an exceptionally powerful winter storm system. The storm brought intense rainfall, strong...

For astronomical observations, clouds are nuisance as they block star and sunlight and distract the observations. But some (e.g. cirrus) clo...

  Solar activity during the past week showed a significant decrease compared with the preceding week.  By Tuesday ,  the average X‑ray flux ...

The duty cycle measures how many observations are available over a given period. For GONG, it generally represents the fraction of observati...