White Light Corona
(700-950 nm)
Hydrogen Alpha Disk
(656.3 nm)
Helium I Line
(1083 nm)
Calcium II K Line
(393 nm)

CURRENT IMAGES OF THE SUN

The images above represent data from the instruments at the Mauna Loa Solar Observatory.

HAO News

satellite orbiting earth's atmosphere

A Century of Eclipses, a New NCAR-based Digital Archive.

Unusual Upper Atmosphere Shrinkage, Scientists Baffled...

Taking the "Surprise" out of Surprise Solar Storms...

The Coronal Multi-channel Polarimeter (CoMP) Sees First Light at MLSO...

Behind the Scenes: Why Is The Sun’s Atmosphere So Hot?

Earth's Upper Atmosphere Cooled Due to Low Levels of Solar Activity During 2008-2009. See LiveScience, MSNBC, Space, or NASA.

Sunspots Don't Tell the Whole Story: A team of HAO Scientists
(Sarah Gibson, Giuliana de Toma, Barbara Emery) > more...

Workshop Highlights

HAO Instrumentation Group working on CoMP delployment

The 6th IAGA/ICMA/CAWSES workshop on "Long-Term Changes and Trends in the Atmosphere" was held at the National Center for Atmospheric Research (NCAR), Boulder, Colorado, USA, June 15– 18, 2010. Long-term changes to Earth's atmosphere are becoming more and more relevant to the future of our world.
In conjunction with this workshop we celebrated the 40th year of Ray Roble's pioneering contributions to solar-terrestrial research. >see high resolution photograph...and>>see workshop webpage...

HAO Events

ACCEHS Workshop
ACCEHS 2010
August 16–18
Mesa Lab
Boulder, CO
Canfield Fest
Canfield Fest 2010
August 9–11
CG-1
Boulder, CO
Eddy 2010 Logo
Jack Eddy
Symposium 2010

October 22–24
Hotel Jerome
Aspen, CO