Fe XIV, Slitless spectrum detail

This is a detail of second order slitless spectrum taken during the mid-eclipse. In this moment except of corona only one prominence was visible. The spectrum of the corona is dominated by Fe XIV emision at 530.3 nm. The two bright dots belong to the prominence. The upper one is H-beta (486.1 nm), the lower one is He_I (587.6 nm).
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Date11. 07. 2010
PlaceTatakoto Atoll, French Polynesia
CoordinateS 17° 20' 39.3'',   W 138° 27' 3.1'',  Alt. 6 m
ConditionsPartially clear, partially thin clouds
OpticsTamron 70-300 mm 1:4-5.6 LD (set to 5.6/300 mm) with diffraction grating in front of the lens, the second order spectrum was used
CameraModified Canon EOS 5D with Baader IR-UV cut filter (ISO 100)
Exposure4 s
ProcessingDark frame and sky background were subtracted
SoftwareSofo ACC 6.1
Copyright© 2010 Miloslav Druckmüller

Miloslav Druckmüller
Institute of Mathematics, Faculty of Mechanical Engineering
Brno University of Technology, Czech Republic
Page last update: 7.8.2014