Fe XIII, 1074.7 nm

This relatively strong emission line was not easy to observe with our Atik 314L+ cameras because 1074.7 nm is very near to upper limit of their sensitivity (see the graph bellow). Fortunately the total solar eclipse was long enough and it was possible to use exposure times up to 67 s. That is why the resulting image is of relatively good quality.

Click on the following reference to display the same image in the maximum quality (633 KB, PNG format).

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: 1074.8 nm, bandwidth 50%: 0.5 nm
  Off-band filter: Andover, center wavelenght: 1073.6 nm, bandwidth 50%: 0.5 nm
Camera2× Atik 314L+ (chip Sony ICX285AL)
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: 6.8.2014