Image

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).

ImageTse2008_500_green_on_off_color.png
Date01. 08. 2008
Time2nd contact 11:03:35 UT, 3rd contact 11:05:39 UT
Total eclipse duration 2 m 4 s
PlaceMongolia, Bor Udzuur
Coordinate45° 43.251' N, 92° 06.837' E, 1223 m altitude
ConditionsExcellent - clear sky, altitude of the Sun above the horizon 22°
Opticson-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)
Cameratwo Canon EOS 5D cameras
Exposure1 s - 8 s (ISO 400), 8 s (ISO 800), 8 s (ISO 1600)
Processing12 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
SoftwareAstro D3F 2.0, PhaseCorr 6.0, LDIC 5.0, Corona 4.1, Sofo ACC 6.1
OrientationImage 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
 


Miloslav Druckmüller
Institute of Mathematics, Faculty of Mechanical Engineering
Brno University of Technology, Czech Republic
druckmuller@fme.vutbr.cz
Page last update: 22.3.2009