Essen, horizontal view

Internet Project

Observing, Photographing and Evaluating the

Transit of Venus, June 8th, 2004

 Essen, equatorial view

The results of our Observations

(very preliminary!)

Superposition of the half-hour-pictures

Our photos fulfil our predections (see the logo at the top)!

If you would like to see an animation click here for horizontal or horizontal view!


The superposition, done by mutually multiplicating the pictures without changing their original orientation, shows the path of Venus across the Sun's face as we all observed it: Because of our azimutal mounting, the lower edge of the camera was held nearly parallel to the horizont.

The 15-minutes-pictures

All of the pictures below have been taken with a Leica spectiv with 800 mm focal length using a glas filter on a film for color slides with a sensitivity of 64 ASA. The slides have been digitized, consequently. (You can get the full sized pictures by clicking on the corresponding small ones.)

All pictures have been taken with 150 seconds time difference. Only that of 7.15 UT has only 120 s time difference.

5.45 UT 6.00 UT 6.15 UT 6.30 UT
6.45 UT 7.00 UT 7.15 UT 7.30 UT
7.45 UT 8.00 UT 8.15 UT 8.30 UT
8.45 UT 9.00 UT 9.15 UT 9.30 UT
9.45 UT 10.00 UT 10.15 UT 10.30 UT
10.45 UT 11.00 UT

The average angular radius of the Sun which can be derived from these pictures is ρS=15.81'.

The corresponding positions of Venus with respect to the Sun's disc

The Excel sheet containing the positions which have been determined with Bildauswertung.exe can be found here.

back to the main page

Udo Backhaus
last modification:  March 28th, 2008