Corona

Mk I K-Coronameter Instrument

Mission Lifetime: 1956 to 1978

Rosa Wallace receives the 2017 Chambliss Medal

Rosa Wallace

Rosa Wallace received the 2017 Chambliss Astronomy Achievement Student Award, which recognizes exemplary research by undergraduate and graduate students who present posters at meetings of the American Astronomical Society (AAS).

Catalogue of MLSO/MK4 White Light Cavities

Determining the state of the corona prior to coronal mass ejections (CMEs) is crucial to understanding and ultimately predicting solar eruptions. A common and compelling feature of CMEs is their three-part morphology as seen in white light observations of a bright expanding loop, followed by a relatively dark cavity, and lastly a bright core associated with an erupting prominence/filament.

Here is a catalogue providing detailed analysis of 98 white light cavities observed by MLSO's Mk4 coronameter:

Giuliana de Toma

Giuliana de Toma is a Project Scientist in the High Altitude Observatory of NCAR specializing in solar cycle variability and its influence on the corona and heliosphere.

Steve Tomczyk

Dr. Steven Tomczyk is a Senior Scientist in the High Altitude Observatory at the National Center for Atmospheric Research. He has spent his career developing instrumentation for the remote sensing of magnetic and velocity fields on the Sun. 

Scott McIntosh

Dr. Scott McIntosh is Deputy Director to NCAR and a Senior Scientist in the High Altitude Observatory at the National Center for Atmospheric Research.

COSMO

Partial Solar Eclipse Today!

Much of the U.S. and Central America will experience a partial eclipse of the Sun this afternoon! Check the animated map below to see what time your location will be favored. If you do go out to look, be sure to use special glasses made to view the Sun.

A Complication to the "Coronal Seismology" Paradigm

Wednesday, December 1, 2010

Quasi-periodic propagating disturbances are frequently observed in coronal intensity image sequences.

Mk4-STEREO-LASCO Composites

HAO / MLSO is now providing daily composite images of the solar corona as seen from 3 viewing angles: STEREO B, Earth-Sun, and STEREO-A. The STEREO A/B composites consist of SECCHI images from: EUVI (inner corona seen against the solar disk), the MLSO MK4 K-Coronameter (blue), the COR1 Coronagraph (green) and the COR2 Coronagraph (in red). The SOHO/MK4 composite combines EIT (solar disk), MK4 (blue) and LASCO C2 (red). MK4 images are NOT rotated to match the STEREO viewing angles.

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