Inner corona

This image was made of images taken with two different lenses. 31 images were taken with Canon EOS 5D quipped with 1 m focal length lens a 23 images were taken with Phase One P45+ equipped with 2 m focal length lens. The insufficient number of images taken with Phase One P45+ (especially longer exposures) made me to create rather complicated composition. The low spatial frequencies were taken from Canon images and high spatial frequencies for Phase One images. This procedure enabled to overcome problems caused by clouds which influenced a lot of images taken during the totality. 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 (3.8 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°
Optics(1) William Optics Megrez 88 Doublet FD + Baader Flat-field FFC, EFL 965mm
(2) William Optics Fluorostar Triplet F=7.0 + adapter, EFL 2000mm
Camera(1) Canon EOS 5D digital camera (ISO 100)
(2) Phase One P45+ (ISO 50)
Exposure(1) 1/125 s - 8 s
(2) 1/8 s - 6 s
ProcessingComposition of 31 eclipse images taken with (1) and 23 images taken with (2).
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 1.98° clockwise to achieve standard orientation i. e. North up.
Copyright© 2009 Miloslav Druckmüller, Peter Aniol

Miloslav Druckmüller
Institute of Mathematics, Faculty of Mechanical Engineering
Brno University of Technology, Czech Republic
Page last update: 7.4.2013