Large Angle and Spectrometric COronagraph

The LASCO instrument is a set of three coronagraphs that image the solar corona from 1.1 to 32 solar radii. It is convenient to measure distances in terms of solar radii. One solar radius is about 700,000 km, 420,000 miles or 16 arc minutes. A coronagraph is a telescope that is designed to block light coming from the solar disk, in order to see the extremely faint emission from the region around the sun, called the corona.

The essential questions of solar physics to be addressed by LASCO are:

The LASCO experiment is investigating the following:

LASCO was built by a consortium of four US and European institutions:

MPS was responsible for the C1 coronagraph, which images the corona from 1.1 to 3 solar radii. It was also responsible for the door mechanisms and focus mechanisms for all the telescopes.

> LASCO home page

2006, Max Planck Institute for
Solar System Research, Lindau