Venus transit

8.VI.2004

Following table shows values of astronomical unit (AU) determined from particular contacts (measurement of the contacts: V. Karlovsky):

contactAU (km)p"error
T2 149,246,259 8.8149 0.235%
T3 149,479,080 8.8011 0.079%
mean 149,365,669 8.8080 0.235%

Snapshots of the particular contacts (time in UTC + 2 hr):

Contact T2 A
Contact T2 A (jpg 4kB)
Contact T2 B
Contact T2 B (jpg 4kB)
Contact T2 C
Contact T2 C (jpg 4kB)
Contact T3 A
Contact T3 A (jpg 4kB)
Contact T3 B
Contact T3 B (jpg 4kB)
Contact T3 C
Contact T3 C (jpg 4kB)

Animations of the particular contacts (time in UTC + 2hr):

Contact T2
Contact T2 (gif 904kB)
Contact T3
Contact T3 (gif 886kB)

 

 

7:00 UT, 7:29 UT, 7:45 UT and 8:10 UT
7:00 UT, 7:29 UT, 7:45 UT and 8:10 UT (jpg 48kB)
8:30 UT, 8:51 UT and 9:00 UT
8:30 UT, 8:51 UT and 9:00 UT (jpg 32kB)
7:18 UT
7:18 UT (jpg 13kB)

First image is showing the assembly consisting of lens with focal length 4 metres (+0.25 diopters) diaphragmed to 9 mm and additional plain mirror used to observe Venus Transit in primary focus. Image of Sun is projected onto a screen. Next images are the snapshots of the screen showing Venus Transit in the primary focus of lens with focal length 4 metres compared to lens with focal length 6 metres:

Whole assembly
Whole assembly (jpg 23kB)
Screen snapshot
Screen snapshot [f=4m] (jpg 15kB)
Screen snapshot
Screen snapshot [f=6m] (jpg 14kB)

Vladimir Karlovsky