
Mauna Loa Solar Observatory (MLSO)
Mauna Loa Solar Observatory (MLSO) acquires unique observations of the Sun’s atmosphere to support NCAR’s goal to address critical gaps in understanding the Sun-Earth system and to provide observations to reduce damage and disruption from space weather hazards.
NEWS: MLSO data used in eclipse prediction model
Predictive Science Inc (PSI) runs a continuously updated model of the solar corona that assimilates fresh magnetic field measurements in near real time. To constrain and check that model, PSI researchers have compared coronal features traced in white light images from HAO's K-Cor coronagraph against the model's predicted magnetic structure. Today (2026-08-12), that model is producing a real-time prediction of the corona along the path of totality.
If you would like to receive prompt CME alerts from MLSO, send a request to mlso_data_requests@ucar.edu.
Latest Images
GONG H-alpha
The Mauna Loa Observatory GONG station is offline until power is completely restored, so the most recent GONG image from an open station is shown here.


















