Image

Solar corona, Earth-lit Moon and stars up to 11 magnitude

It is a composition of 23 images taken with Canon EOS 5D using Rubinar 10/1000mm (modified Maksutov - Cassegrain). Even though the Sun was only 22° above the horizon, the observing conditions were surprisingly absolutely fantastic. It made possible to visualize not only the solar corona in very high resolution but also the Earth-lit Moon and stars up to 11 magnitude. The brightest star (4 magn.) is slightly blurred by the motion of the Sun during the eclipse. The blurring is not visible on weaker stars because they were recorded only on the longest exposures which were taken in the short time interval near the mid-eclipse. The position of the Moon represents the situation 54 seconds after the second contact i. e. 11:04:29 UT (18:04:29 local time). Both the display of the solar corona and the lunar surface in the resulting image are beyond the ability of human vision during the eclipse.
Click on the image or on the following reference to display the higher resolution image version (2.1 MB, PNG format).

ImageTse2008_1000_mo1.jpg
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°
OpticsRubinar 10/1000mm
CameraCanon EOS 5D digital camera (ISO 100 and 200)
Exposure1/60 s - 8 s at ISO 100 and 8 s at ISO 200
ProcessingComposition of 23 images. Eclipse images calibrated by means 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, LDIC 5.0, Corona 4.1, Sofo ACC 6.1
OrientationImage must be rotated 12.1° clockwise to achieve standard orientation i. e. North up.
Copyright© 2008 Miloslav Druckmüller, Peter Aniol, Vojtech Rušin
 


Miloslav Druckmüller
Institute of Mathematics, Faculty of Mechanical Engineering
Brno University of Technology, Czech Republic
druckmuller@fme.vutbr.cz
Page last update: 19.3.2009