A typical day for Professor David

A drawing of observed sunspots

• The Dome


• The Telescope


• Professor David


• Observing the Sun


• The projected image of the Sun


• The Wolf sunspot number


• A drawing of observed sunspots

Here you can see a cardboard after an observation. The Sunspots have been reproduced, counted and grouped. You can click on this picture to enlarge it and to obtain more details.