EUV spectra of a medium-size sunspot and its surroundings, NOAA 7981, were obtained on 2 August 1996 with the Coronal Diagnostic Spectrometer (CDS) and the Solar Ultraviolet Measurements of Emitted Radiation (SUMER) on the Solar and Heliospheric Observatory (SOHO). The spectral lines formed in the transition region and corona show considerable stru...
Although the field of view of the Normal Incidence Spectrometer (NIS) of the Coronal Diagnostic Spectrometer (CDS) is 4×4 arc min, it is possible to observe the full solar disk by forming a mosaic of images taken in succession. This paper describes just such a study which has been used to collect images of the Sun simultaneously in six wavelengths ...
'Globally operating technical infrastructures and their linkages and superimpositions in large urban centers have been studied in an international research-network 'Large Technical Systems' (LTS) since the mid-1980s. The WZB research groups 'Grosse technische Systeme' and its successor 'Metropolitan Studies' have been part of this research program....