Hartogh, P.; Hartmann, G. K.; Heimesaat, G.: The use of Chirp-transform-spectrometers for real time Fouriertransform of stochastic signals. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1989)
Puliafito, E.; Puliafito, C.; Hartmann, G. K.; Degenhardt, W.; Hartogh, P.: Bestimmung des Wasserdampf- und Ozongehaltes der Stratosphäre und Mesosphäre aus radiometrischen Messungen. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1989)
Hartogh, P.: Low cost system used for process control and data acquisition for a millimeter-wave radiometer-spectrometer. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1988)
Hartmann, G. K.; Hartogh, P.; Loidl, A.: Heterodyne-Spectroscopy in the Millimeter and Submillimeter Domain. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1987)
First Light! The spectro-polarimeter of the world's largest solar telescope in Hawaii looks at the Sun for the first time. The instrument was developed in Germany.
Dr. Theodosios Chatzistergos receives award by the European Space Weather and Space Climate Association for his research findings on the historical activity of the Sun.
The Zdenĕk Švetska Senior Prize of the Solar Physics Division of the European Physical Society (EPS) recognizes Solanki’s pioneering contributions to solar research.