Fe XIV emission - on/off line color image
The red and blue components of this image are identical and they consist of image taken though
529.1 nm filter. This is the image of continuum only. The green component is the image taken through
530.2 nm filter. This image is taken on the wavelength of Fe XIV emission line, however the light
contained
not only Fe XIV emission but continuum as well. Both the on-line and the off-line image were precisely
calibrated
and the shift of 1.1 nm between the on-line and the off-line filter is negligible from the point of
continuum
intensity. Therefore the intensity of continuum in the red, green and blue component of the image is
identical and represents neutrally gray component of the color image. The XIV emission is present only in the
green component of the color image. The image is presented in logarithm brightness scala and without any
structure enhancement. The image contains a lot of information which is invisible because of very
high brightness range (see this animation).
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Image | Tse2008_500_green_on_off_color.png |
Date | 01. 08. 2008 |
Time | 2nd contact 11:03:35 UT, 3rd contact 11:05:39 UT Total eclipse duration 2 m 4 s |
Place | Mongolia, Bor Udzuur |
Coordinate | 45° 43.251' N, 92° 06.837' E, 1223 m altitude |
Conditions | Excellent - clear sky, altitude of the Sun above the horizon 22° |
Optics | on-line: Beroflex 8/500mm, 530.2nm filter, bandwidth 0.15nm (Andover Corp. USA) off-line: Exakta 8/500mm, 529.1nm filter, bandwidth 0.15nm (Andover Corp. USA)
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Camera | two Canon EOS 5D cameras |
Exposure | 1 s - 8 s (ISO 400), 8 s (ISO 800), 8 s (ISO 1600) |
Processing | 12 on-line and 12 off-line images were used. Eclipse images were calibrated by means of dark frames and flat-fields, aligned by means of phase correlation then composed by means of LDIC 5.0 software. Image processing by Miloslav Druckmüller |
Software | Astro D3F 2.0, PhaseCorr 6.0, LDIC 5.0, Corona 4.1, Sofo ACC 6.1 |
Orientation | Image must be rotated 8.3° clockwise to achieve standard orientation i. e. North up. |
Copyright | © 2008 Miloslav Druckmüller, Vojtech Rušin, Ľubomír Klocok, Peter Aniol, Karel Martišek |
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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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