Total solar eclipse image and SOHO LASCO C2 composite

This composite image shows the solar corona during very high solar activity near to maximum of 11 year cycle. It illustrates the fact that the most interesting part of solar corona is observable in visible part of the spectrum, even today, only during total solar eclipses. Diffraction on any occulter which is near the telescope observing the Sun in visible light prevent us from creating a good quality image of inner corona.
Click on the image or on the following reference to display the higher resolution image version (1.0 MB, PNG format).

Date3. 11. 2013
Time2nd contact 14:22:18 UT, 3rd contact 14:22:37 UT
Total eclipse duration 19 s
PlacePokwero, Uganda
CoordinateN 2° 33' 21.24",   E 31° 23' 59.10",  Alt. 640 m
Conditionsvery faint high clouds
Optics(1) Rubinar 10/1000mm,  (2,3) 3M-5CA 8/500mm
Camera(1) Canon EOS 6D (ISO 250),  (2,3) Canon 350D (ISO 100)
Exposure(1) 1/500 s,  (2) 1/30 s, 1/15 s, 1/8 s,  (3) 1/4 s, 1/2 s, 1 s
ProcessingComposition of 22 eclipse images and SOHO LASCO C2 image. Eclipse images were calibrated by means of large number of dark frames and flat-fields, aligned by means of phase correlation, composed by means of LDIC 5.0 software, processed using Corona 4.1 in order to visualize coronal structures. Final processing was done using ACC 6.1 software.
Image processing by Miloslav Druckmüller
SoftwareAstro D3F 2.0, PhaseCorr 6.0, MPA 1.0, LDIC 6.0, Corona 4.1, Sofo ACC 6.1
NoteSOHO LASCO C2 image time 14:17 UT
Copyright© 2013 Petr Horálek - Úpice observatory, Jan Sládeček, Miloslav Druckmüller & ESA/NASA

Miloslav Druckmüller
Institute of Mathematics, Faculty of Mechanical Engineering
Brno University of Technology, Czech Republic
Page last update: 15.11.2013