Create Stunning Blue Images with Cyanotype

Experience the magic of light in this family workshop.

How can light create images in captivating shades of blue? You and your family can find out when the Round Tower, in connection with the photo exhibition Ad Lucem, invites children and adults to a creative workshop.

Together with artist Cecilia Ömalm and astronomy professor Göran Östlin—the creators of the exhibition—you’ll have the chance to make your own light prints using cyanotype, a historical photographic technique invented by astronomer John Herschel. The technique traditionally uses iron salts mixed into UV-sensitive solutions which, together with sunlight, form images in characteristic deep-blue tones.

In this workshop, we work with UV light and small glass negatives featuring space-themed motifs, which we will transform into beautiful cyanotypes.

Join us for a creative family workshop that brings together art, science, and curiosity—where you’ll learn the technique and take home your own blue masterpieces! With the same ticket, you can also explore the exhibition and the rest of the Round Tower.