White-light corona and SOHO EIT 30.4 nm image
At the eclipse beginning and at the end, chromospheric features like prominences and spicules are
visible. The same structures are visible on SOHO EIT images taken on the wavelength of 30.4 nm
(He II), which makes precise alignment with eclipse images very easy. The
correspondence of the mentioned structures is absolutely
perfect. The dark areas near both solar poles are those parts of the corona which were invisible from our
observing place during the whole totality.
Click on the image or on the following reference to display the
higher resolution image version (2.4 MB, PNG format).
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| Image | Tse2006l_1640_eit304.png |
| Date | 29. 03. 2006 |
| Time | 2nd contact 10:35:39 UT, 3rd contact 10:39:38 UT
SOHO image 10:40:12 UT |
| Place | Libya |
| Coordinate | 30° 56.946' N, 24° 14.301' E, 158 m altitude |
| Conditions | Excellent - clear sky, altitude of the Sun above the horizon 62° |
| Optics | 16.4/1640mm (Takahashi 100 mm ED, focal length 820 mm with Canon 2× teleconverter) |
| Camera | Canon EOS 5D digital camera (ISO 100) |
| Exposure | 1/1000 s - 4 s |
| Processing | Composition of 60 eclipse images and SOHO EIT He II 30.4 nm image. Eclipse images were aligned by means of phase correlation, composed by means of LDIC 4.0 software, processed using Corona 4.0 in order to visualize coronal structures. Final processing including alignlent with SOHO image was done using ACC 6.0 software.
Image processing by Miloslav Druckmüller |
| Software | PhaseCorr 4.0, Corona_ret 2.0, LDIC 4.0, Corona 4.0, Sofo ACC 6.0 with Match II module |
| Orientation | Image must be rotated 24.258° anti-clockwise to achieve standard orientation i. e. North up. |
| Copyright | © 2006 Miloslav Druckmüller, Peter Aniol, ESA/NASA |
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Miloslav Druckmüller
Institute of Mathematics, Faculty of Mechanical Engineering
Brno University of Technology, Czech Republic
druckmuller@fme.vutbr.cz
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Page last update: 27.11.2019
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