prometheus is a distributed digital image archive that currently makes more than 3,496,000 images of over 120 databases from institutes, research facilities and museums researchable on a common user interface.

Situated at the Institute of Art History of the University of Cologne, prometheus is supported by the non-profit association prometheus e.V. which promotes the ongoing developments of the digital media for science and research.

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Image series of the week

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Women Artists in Modernism
self-confident, assertive, professional – Around 1900, many women artists successfully asserted themselves with great independence and professionalism in a male-dominated cultural sector. | more...


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Shibboleth (DFN-AAI) is a national browser-based infrastructure that was developed to provide a simple, transparent and secure process that can be used to shorten and streamline the authentication of people and the granting of authorizations. You only need to log in at one location (single sign-on), for example at your home university, and you can then access many different licensed services and online publications. It does not matter which device you use.
prometheus cannot yet be used via Shibboleth. The emphasis is on “not yet” because we are currently testing intensively with some institutions such as the University of Cologne. Here, logging in from outside already works for the test group:

Additional interested licensed institutions will be gradually integrated. If you are interested, please contact us.

… and further steps will be implemented in the next few weeks, for example the integration of your personal access with settings, personal data, image collections and image uploads, even if you change institutes.