Fe XIII, 1074.7 nm
Our expedition observed emission from the following ions in the visible
and near IR wavelength range: Fe IX (435.9 nm), Fe X (637.4 nm),
Fe XI (789.2 nm), Fe XIII (1074.7 nm), Fe XIV (530.3 nm)
and Ni XV (670.2 nm). These emission lines provide an excellent
diagnostic tool
for probing the physics of the solar corona. One of the tools is clear from the following graph.
Fe XIII line at 1074.7 nm is a prominent emission line in near IR coronal spectrum which is
less contaminated by continuum then other observed emission lines.
Click on the image or on the following reference to display the
higher resolution image version (764 KB, PNG format).
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| Image | TSE2019_CTIO_Fe_XIII.png |
| Date | 02. 07. 2019 |
| Time | 2nd contact 20:38:35 UT, 3rd contact 20:40:39 UT |
| Place | Cerro Tololo Interamerican Observatory (CTIO), Chile |
| Coordinate | S 30° 10.12564', W 70° 48.37085', Alt. 2200 m |
| Conditions | Clear sky, solar altitude 13° above horizon |
| Optics | 2× Achromat 4/200 mm equipped with following narrow band filters:
On-band filter: Andover, center wavelength: 1074.7 nm, bandwidth 0.5 nm
Off-band filter: Andover, center wavelength: 1073.6.4 nm, bandwidth 0.5 nm |
| Camera | 2×Atik 414EX |
| Exposure | 8 - 32 s |
| Processing | Composition of 10 eclipse images (5 On-band and 5 Off-band) taken with two cameras. Images were calibrated by means of dark frames and flat-fields, aligned by means of phase correlation, composed by means of LDIC 6.0 software, continuum was removed from Fe X emission by subtracting the Off-band images. The resulting image was processed using Corona 6.0 software in order to visualize coronal structures. The final processing was done using ACC 6.1 software.
Image processing by Miloslav Druckmüller |
| Software | Astro D3F 2.0, PhaseCorr 7.0, LDIC 6.0, Corona 6.0, Sofo ACC 6.1 |
| Orientation | This image has correct solar North-top orientation |
| Copyright | © 2019 Miloslav Druckmüller, Shadia Habbal, Petr Štarha, Jana Hoderová
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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: 17.4.2021
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