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Observation of the sun at the event "Offenes Gartentor"


Dr. Gerold Holtkamp, July 3, 2023


The campaign"Offenes Gartentor Osnabrück und Umgebung" is an initiative that has been around for many years and whose members have set themselves the goal of presenting their diverse gardens. On selected dates throughout the year, they open their garden gates to give visitors a glimpse into their private green paradises. Such an "open garden gate" is also a good opportunity to present the most important factor for greenery and bloom – our sun!


On July 2, 2023, we opened our garden in Osnabrück at the Sonnenhügel from 11 a.m. to 6 p.m. for all interested parties. Anyone who was interested could come and have a look. More than 70 visitors did not miss the chance to take a "look behind the scenes" of our single-family home.


Some knew it in advance, but many were surprised to find an astronomical telescope set up to observe the sun. Although there were many clouds in the sky, the numerous gaps allowed a view to our home star sufficiently often. Most of the visitors wanted to look through the telescope and were impressed by the sight of the sun with its many spots (we are close to the solar activity maximum).


The sun often made it through the clouds. It's worth taking a look into the telescope..


The view of the sun in the telescope on July 2, 2023


In addition, visitors were able to look directly at the sun through special sunglasses and were surprised at how small it appears. The surprise was even greater when a solar model built at the correct distance and size appeared to be the same size as the sun and accordingly the earth was only a pinhead at its own location.


The telescope used: APO 80/600, of course with solar filter. In the background the yellow sun model


According to many visitors, their visit to both the garden and the sun was worth it. What more could you want.