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Recent News

Lisa Waters demonstrating magnetic fields and effects on the sun
September 21, 2018

Educational outreach is an important and rewarding part of an observer’s job at the Mauna Loa Solar Observatory (MLSO) that occupies part of the NOAA Mauna Loa research site located on the flanks of Mauna Loa Mountain at an elevation of 3440 meters in the U.S. state of Hawai’i.

H & K emission cycles for the Sun
September 18, 2018

Life imitates art, sometimes remarkably well... A recent paper has announced the discovery of an exoplanet around the nearby star 40 Eridani, which had previously been identified as the host star of Vulcan, the fictional home world of Star Trek’s cultural icon, Mr. Spock.

Publication Highlights

 Schematic view of IRIS
September 15, 2018

The Interface Region Imaging Spectrograph (IRIS) is a NASA Small Explorer mission that provides high-resolution spectra and images of the Sun in the 133–141 nm and 278–283 nm wavelength bands.

Temporal Variations of Kp
September 14, 2018

Observations from lidars and satellites have shown that large temperature increases and decreases occur in the middle and low latitudes of the mesosphere and lower thermosphere (MLT) region during geomagnetic storms.

Cross-correlation between Joule heating and the Epsilon function.
September 13, 2018

Periodic oscillations associated with Alfven waves with periods ranging from several tens of minutes to several hours are commonly seen in the solar wind.

MLSO Latest Images

CoMP Coronal Intensity

The COronal Multi-channel Polarimeter (CoMP) observes the Fe-XIII emission line at 1074.7 nm to measure the coronal magnetic field and obtain plasma density and motion in the low corona from ~1.03 to 1.5 solar radii.


K-Cor White Light Corona

Designed to study the formation and dynamics of coronal mass ejections and the evolution of the density structure of the low corona, K-Cor records the polarization brightness (pB).


K-Cor (radially graded filter)

K-Cor image with a normalized radially graded filter (nrgf) to maximize image contrast, especially in the outer field.

These data are ideal for measuring positions of coronal structures such as CMEs and helmet streamers.

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