Front Page

Recent News

Vic Tisone
July 25, 2016

HAO staff are deeply saddened to tell you of the sudden passing of our dear friend and long-time colleague, Vic Tisone. Vic passed away at Boulder Community Hospital on Thursday, July 14th after a short fight with pancreatic cancer. Vic began working at NCAR in 1968. Vic had spent some time at CU working toward a physics degree.

July 21, 2016

HAO along with researchers from the Max Planck Institute for Solar System Research, The University of Göttingen, and NorthWest Research Associates have now shown that magnetic flux concentrations forming active regions on the sun emerge at a rate much slower than predicted by the prevailing current model.

Scott McIntosh
July 13, 2016

Director Scott McIntosh is giving the next NCAR Explorer Series Lecture detailing the anticipated great American eclipse of 2017. The Explorer Series is NCAR’s new public lecture series appropriate for ages 12+.

Publication Highlights

Evolution figure
Wednesday, July 13, 2016

In June 2013, the two scientific instruments onboard the second Sunrise mission witnessed, in detail, a small-scale magnetic flux emergence event as part of the birth of an active region.

3D simulation image
Wednesday, July 13, 2016

We present the first global 3D simulations of thermal convection in the oblate envelopes of rapidly-rotating solar-type stars.

chromospheric activity and rotation in field dwarfs and subgiants
Friday, July 1, 2016

The study of Sun-like stars helps us to put the Sun in context. HAO Newkirk Fellow Ricky Egeland has co-authored a new publication with Space Science Institute scientist Travis Metcalfe and Carnegie Fellow Jennifer van Saders.

MLSO Latest Images

H-alpha Disk and Limb

Currently, H-alpha images are obtained by the GONG network, operated by the National Solar Observatory .


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 filter applied to maximize image contrast, especially in the outer field.

People Profile