Corona, detailed view

80 eclipse images were taken during totality by means of a Canon EOS 5D digital camera equipped with approx. 1 m focal length lens. Unfortunately a lot of images were influenced by clouds and that is why the composition of all images in one resulting image was impossible. Finally 31 images were chosen. About 550 other images (dark frames and flat-fields) were used for eclipse images calibration. The resulting image shows not only the inner corona in the delicate details but also the lunar surface is recorded in a quality not very far from an image taken during the full moon. The position of the Moon represents the situation 139 seconds after the second contact, i. e. 03:30:58 UT (15:30:58 local time).
Click on the image or on the following reference to display the higher resolution image version (1.9 MB, PNG format).

Date22. 07. 2009
Time2nd contact 03:28:39 UT, 3rd contact 03:34:20 UT
Total eclipse duration 5 m 41 s
PlaceEnewetak Atoll, Marshall Islands
Coordinate11° 21.546' N, 162° 20.827' E, 3 m altitude
ConditionsPartially clear, partially small cumulus cloud,
altitude of the Sun above the horizon 56-57°
OpticsWilliam Optics Megrez 88 Doublet FD + Baader Flat-field FFC, EFL 965mm
CameraCanon EOS 5D digital camera (ISO 100)
Exposure1/125 s - 8 s
ProcessingComposition of 31 eclipse 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, MPA 1.0, LDIC 5.0, Corona 4.1, Sofo ACC 6.1
OrientationImage must be rotated 6.5° clockwise to achieve standard orientation i. e. North up.
Copyright© 2009 Miloslav Druckmüller, Peter Aniol, Vojtech Rušin, Ľubomír Klocok, Karel Martišek, Martin Dietzel

Miloslav Druckmüller
Institute of Mathematics, Faculty of Mechanical Engineering
Brno University of Technology, Czech Republic
Page last update: 27.11.2019