Corona up to 5 solar radii

This image is made mainly from images taken by David Finlay. The S/N ratio and sharpness of innermost corona was improved by means of images taken by Constantinos Emmanouilidis. The image is only slightly influenced by thin high clouds which are visible as faint bands especially in top left corner in the image. The full resolution image you may find here.
Click on the image or on the following reference to display the higher resolution image version (2.3 MB, PNG format).

Date13. 11. 2012, (14. 11. 2012 local time)
Time(1) 2nd contact 20:37:41 UT, 3rd contact 20:39:41 UT
(2) 2nd contact 20:37:39 UT, 3rd contact 20:39:39 UT
PlaceQueensland, Australia
Coordinate(1) S 16° 08.445', E 144° 46.306', Alt. 432 m
(2) S 16° 07.650', E 144° 46.430', Alt. 441 m
Conditionsvery faint high clouds
Optics(1) Televue TV-85 scope, 600mm, F7, APO with 0.8x focal reducer
(2) Takahashi TSA 102, 816mm, F8, Field flattener TOA-35
Camera(1) Canon EOS 5D Mark III (ISO 50 and 200)
(2) Canon EOS 5D (ISO 100) - computer control Solar Eclipse Maestro
Exposure(1) 1/4000 s - 2.5 s (ISO 50) and 1/4000 s - 2.5 s (ISO 200)
(2) 1/1000 s - 8 s
ProcessingComposition of 87 eclipse images - (1) 46, (2) 41. Eclipse images were 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 6.0, Corona 4.1, Sofo ACC 6.1
Note(1) David Finlay
(2) Constantinos Emmanouilidis
OrientationImage must be rotated 11.3° clockwise to achieve standard orientation i. e. solar North up.
Copyright© 2012 David Finlay, Constantinos Emmanouilidis, © 2013 Miloslav Druckmüller

Miloslav Druckmüller
Institute of Mathematics, Faculty of Mechanical Engineering
Brno University of Technology, Czech Republic
Page last update: 8.10.2013