Chromosphere after the second contact

This image is the result of numerical processing of 22 images taken by Miloslav Druckmüller and 8 images taken by Peter Aniol. The inner part of the corona was reconstructed mainly from images taken by Peter because he used longer focal length (600 mm) and the digital camera with chip having smaller sensors (Canon EOS 20D). The more distant part of the corona was reconstructed mainly using images taken by Miloslav, who used shorter focal length (400 mm) and camera with bigger sensors (Canon EOS 1D Mark II), which have lower noise. The red fog is H-alpha radiation of the solar chromosphere diffused by a cirrus cloud.
Click on the image or on the following reference to display the higher resolution image version (1.0 MB, PNG format).

Date08. 04. 2005
TimeSecond contact 19:51:19 UT, third contact 19:51:52 UT
Total eclipse duration 33 s
PlaceAboard Discovery ship in South Pacific ocean
CoordinateS 22° 37.19', W 129° 38.67'
ConditionsImages taken through cirrus cloud
OpticsD: Canon Zoom Lens EF 100-400 mm 1:4.5-5.6 L IS (set to 400 mm)
A: Canon Lens EF 600mm 1:4 L IS USM (stopped to 5.6)
CameraD: Canon EOS 1D Mark II digital camera (3504 × 2336 pixels, Q = 1.3)
A: Canon EOS 20D digital camera (3504 × 2336 pixels, Q = 1.6)
Remark: If you multiply used focal length of the digital camera lens by factor Q, you obtain equivalent focal lenght of classical 24×36mm camera
Exposure1/4000 s to 1/125 s
ProcessingComposition of 31 images (D: 22 images, A: 8 images) processed by means of Corona 3.0 and ACC 6.0 software
Image processing by Miloslav Druckmüller
SoftwareSofo ACC 6.0 with Match II module, Corona 3.0
NoteD ... denotes Miloslav Druckmüller
A ... denotes Peter Aniol
OrientationThe image is presented roughly in the orientation as it was visible on the sky. The image must be rotated 120° clockwise to achieve the standard orientation i.e. North top, East left
Copyright© 2005 Miloslav Druckmüller, Peter Aniol


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