Inner corona

Only the innermost part of solar corona I was able to reconstruct from images taken by Friedhelm Dorst in bad weather but the image shows a lot of interesting details.
Click on the following reference to display the same image in the maximum quality (451 KB, PNG format).

Date04. 12. 2002
TimeCalculated times - Second contact 06:26:08 UT, third contact 06:27:42 UT
Measured times - Second contact 06:26:15 UT, third contact 06:27:44 UT
Coordinate33° 53' 51.1'' E, 24° 58' 58.5 '' S, altitude approx. 100 m
ConditionsThe beginning of totality homogeneous but rather transparent clouds, the end suffered from only thin clouds.
OpticsTraveler - Astrophysics with field flattening lens and TC 300 teleconverter of Nikon, effective focal length 1315 mm at 105 mm aperture .
CameraNikon D1H digital camera body
Resolution3.66 arc sec / pixel (image on this Web page)
Exposurefrom 1/15 s to 1/500 s
Processing4 different images were used for image creation. Images were aligned by means of ACC 6.0 Match II module and then processed using Corona 3.0 software.
Image processing by Miloslav Druckmüller
SoftwareCorona 3.0, Sofo ACC 6.0 with Match II module
OrientationImage must be rotated 62.7° anticlockwise to achieve the standard orientation (N top, E left)
Copyright© 2002 Friedhelm Dorst, © 2004 Miloslav Druckmüller


Miloslav Druckmüller
Institute of Mathematics, Faculty of Mechanical Engineering
Brno University of Technology, Czech Republic
Page last update: 19.3.2007