GROUND-BASED Observations

Observations from the ground including high altitude observatories coupled with advanced image processing and stabilizing techniques can yield a wealth of information about the cosmos. For the 2017 eclipse a number of observing programs are being developed to explore the sun and corona through imaging and spectroscopy.

The Citizen CATE Experiment will use a fleet of telescopes to observe the total solar eclipse of 21 Aug 2017.  As the shadow of the moon travels across the continental USA, citizen astronomers from more than 60 sites will take images of the brightness of the inner solar corona.  While the totality phase of the eclipse will last only 2 minutes at each site, the combined Citizen CATE Experiment data set will reveal for the first time how this part of the solar atmosphere changes during 90 minutes.

For the 2017 eclipse, Catholic University in partnership with NASA Goddard Space Flight Center, NASA HQ, and the Southwest Research Institute will conduct an experiment to measure the sun’s coronal intensity through two wavelengths (3850A and 4100A) and utilizing the “Imaging Spectrograph of Coronal Electrons” (ISCORE) instrument. These measurements will yield the electron temperatures of the K-corona.

Solar Physics (2009) 260, 347-361, Nelson Reginald, Joseph Davila, Douglass Rabin, Madhulika Guhathakurta, and Donald Hassler