Fabry-Perot interferometric observations of the coronal red and green lines during the 1983 Indonesian eclipse

Abstract

A dual-channel Fabry-Perot interferometric system was used to study simultaneously the coronal emission lines at 5303 Å (Fe XIV) and at 6374 Å (Fe X). Initial results indicate an emission corona confined largely within 1.2 R_sun;. Doppler temperatures derived from the width of the 5303-Å line appear to be appreciably lower than similar temperatures determined during the solar-maximum eclipse of 1980.