June 8, 2004

"Artist Impression"

The day of the Venustransit was a glorious day in the Netherlands, warm and cloudless from early morning to well after the end of the transit. Only around midday, shortly before exit, some thin clouds passed by. The effect of this can be seen on the first photo of the exit-series below. Fortunately the clouds moved on and the exit could be observed without disturbance.
Most surprising, and for me the most spectacular phenomenon of the event, was the visibility of Venus' atmosphere during entry and exit. I was not able to record this phenomenon with the camera, but made an "artist impression" of it, which you can see above. Here the effect is enhanced, but it gives a good impression of the wonderful 3-D feeling the view gave.
Only one group of small sunspots were visible, right in the middle of the Sun. At the "bottom" of the Sun, not far from exitpoint, a large flarefield was situated. The sunspots and the flarefield can be seen on the photos of the transit-series, they give good hold on the orientation of Sun and Venus. The flarefield is very well pictured on the last photo of the exit-series.


Click on the small images to view the full images.







Intes MK67 (150mm f/12 MCT) with Baader Astro Solar filter (full aperture) and "sunscreen" to keep eyepiece, camera and head comfortably in the shade.
For photography a simple automatic digital camera (5 Mpix) was used, handheld behind the eyepieces. For pictures of the whole Sun eyepieces of 40mm (45x) and 30mm (60x) were used, for close-ups a 20mm TV plossl (90x).