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In Fond Memory

We are deeply saddened to acknowledge the loss of Michael J Thompson. He was a scientist, Director, mentor, colleague, collaborator, and friend. A very thoughtful and kind human being. All in HAO, and many of our colleagues around the world, are shocked at Michael’s sudden passing. Our most sincere sympathy and thoughts are with Michael’s wife Kate, son Robin, and their friends at this time.

Recent News

Radio dish
October 11, 2018

On October 6th, the MLSO staff participated in AstroDay 2018, an educational outreach event coordinated by the Mauna Kea Observatories. 3,000 people attended. This was the second occurrence of this event, located in Kailua-Kona, on the west side of Hawaii Island.

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

Digital image sensors
October 11, 2018

Digital image sensors are ubiquitous in astronomical instrumentation and it is well known that they suffer from issues that must be corrected for data to be scientifically useful.

Sun-like activity cycle of HD 81809 binary system in calcium HK emission
October 10, 2018

HD 81809 has one of the highest-quality activity cycles from the sample of stars synoptically observed in the Mount Wilson Observatory HK Project.

Global total TRMM current
October 3, 2018

Peterson et al. (2015) developed an algorithm for estimating the electric field vector at any point above an electrified cloud from passive microwave observations. 

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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