English (UK)
It is with great sadness that we announce the death of our former Director
Dr. Kurt Birkle
8. 1. 1939 - 1. 1. 2010
A tragic accident has taken him away from us.
Brown dwarfs are sometimes called "failed stars". They are born from interstellar clouds although it is not clear if in a fashion similar to the formation of stars or planets. Brown dwarfs lack the required minimum mass to be able to sustain nuclear reactions in their interiors so they are also known as failed stars and have some properties resembling those of giant planets. Discovering proto-brown dwarfs, i.e., very young brown dwarfs, is key to understanding how nature produces them. A recent study has found the best proto-brown dwarf candidate known to date. Calar Alto has contributed key data to this finding…
From the 16th to the 18th of October 2009, a course on astronomical photometry for amateur astronomers was given at Calar Alto Observatory. Using the professional facilities of the Observatory, this absolutely new initiative was conducted by Calar Alto specialists with the aim of training amateur astronomers in the basics of astronomical absolute photometry, applied to the standard measurement of the brightness of the night sky. The final goal is to constitute a wide group of people capable of contributing to international campaigns of evaluation and reduction of light pollution in Spain and Europe…
The diversity of colours, shapes, and sizes of planetary nebulae make them fascinating objects. In this photo release Calar Alto presents a rather unique view combining both optical and near-infrared data of the Ring Nebula (M57)...
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