Fe XI, 789.2 nm

Fe XI is very prominent forbidden line in the near IR spectrum. This line is very interesting from several reasons. One of them is that Fe XI is the most frequent Fe ion in solar corona and in the solar wind. For more details see following two articles: 1, 2.
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Date11. 07. 2010
Time2nd contact 18:45:36 UT, 3rd contact 18:50:05 UT
Total eclipse duration 4 m 29 s
PlaceTatakoto Atoll, French Polynesia
CoordinateS 17° 20' 39.3'',   W 138° 27' 3.1'',  Alt. 6 m
ConditionsPartially clear, partially thin clouds
Optics2× Thorlabs near IR achromat 4/200mm equipped with following narrow band filters:
  On-band filter: Andover, center wavelenght: 789.3 nm, bandwidth 50%: 0.5 nm
  Off-band filter: Andover, center wavelenght: 788.1 nm, bandwidth 50%: 0.5 nm
Camera2× Princeton Instruments PIXIS 1024BR
ProcessingImage processing by Miloslav Druckmüller
SoftwarePhaseCorr 6.0, LDIC 5.0, Corona 4.1, Sofo ACC 6.1
NoteSee this ApJ paper for more details.
OrientationSee this image. The white circle represents the position of photosphere.
Copyright© 2010 Shadia Habbal, Huw Morgan, Judd Johnson, Martina Arndt, Adrian Daw
© 2011 Miloslav Druckmüller

Miloslav Druckmüller
Institute of Mathematics, Faculty of Mechanical Engineering
Brno University of Technology, Czech Republic
Page last update: 10.8.2014