Baily's beads before the second contact

This image of Baily's beads shows the impressive view several seconds before the second contact. The rainbow-colored ray of light is caused by the secondary mirror holder of the Newtonian telescope.
Click on the image or on the following reference to display the higher resolution image version (993 KB, PNG format).

Date11. 07. 1991
Time2nd contact 18:48:23 UT, 3rd contact 18:54:52 UT
Total eclipse duration: 6 min 29 sec
PlaceTodos Santos, Baja California, Mexico
CoordinateW 110° 17', N 23° 29'
ConditionsClear sky, altitude of the Sun above the horizon: 82°
Optics10 inch F6 Newton reflector
FilmFujicolor 100 (6 × 6 cm)
ProcessingComposition of 10 images. Images were aligned by means of phase correlation technique and then processed using Corona 4.0 software. Final processing was done by means of ACC 6.0 image analyzer.
Image processing by Hana Druckmüllerová and Miloslav Druckmüller
ScannerEpson Perfection V750 Pro (6400 dpi resolution, 4× scanned each image)
SoftwarePhaseCorr 4.0, FilmCMP 2.0, Corona 4.0, Sofo ACC 6.0
OrientationThe image must be rotated 11.8° clockwise to achieve the standard orientation i.e. North top, East left
Copyright©1991 Ronald E. Royer, ©2007 Hana Druckmüllerová, Miloslav Druckmüller

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