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The flash spectrum of the solar chromosphere and corona was measured with aslitless spectrograph before, after, and during the totality of the solareclipse, of 11 July 2010, at Easter Island, Chile. This eclipse took place atthe beginning of the Solar Cycle 24, after an extended minimum of solaractivity. The spectra taken during the eclipse show a different intensity ratioof the red and green coronal lines compared with those taken during the totalsolar eclipse of 1 August 2008, which took place towards the end of the SolarCycle 23. The characteristic coronal forbidden emission line of forbidden FeXIV (5303 {\AA}) was observed on the east and west solar limbs in four areasrelatively symmetrically located with respect to the solar rotation axis.Subtraction of the continuum flash-spectrum background led to theidentification of several extremely weak emission lines, including forbidden CaXV (5694 {\AA}), which is normally detected only in regions of very highexcitation, e.g., during flares or above large sunspots. The height of thechromosphere was measured spectrophotometrically, using spectral lines fromlight elements and compared with the equivalent height of the lowerchromosphere measured using spectral lines from heavy elements.

Spectroscopic Coronal Observations during the Total Solar Eclipse of 11 July 2010