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Institut für Astronomie und Astrophysik

Abteilung Astronomie

Sand 1, D-72076 Tübingen, Germany
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Preprint 01/10

UV and EUV Instruments

K. Werner

Institut für Astronomie und Astrophysik, Sand 1, D-72076 Tübingen, Germany

To be published in: Landolt-Börnstein, New Series VI/4A, Astronomy, Astrophysics, and Cosmology; Instruments and Methods, ed. J.E. Trümper, Springer-Verlag, Berlin, 2010

Abstract. We describe telescopes and instruments that were developed and used for astronomical research in the ultraviolet (UV) and extreme ultraviolet (EUV) regions of the electromagnetic spectrum. The wavelength ranges covered by these bands are not uniquely defined. We use the following convention here: The EUV and UV span the regions ~100-912 and 912-3000 Å respectively. The limitation between both ranges is a natural choice, because the hydrogen Lyman absorption edge is located at 912 Å. At smaller wavelengths, astronomical sources are strongly absorbed by the interstellar medium. It also marks a technical limit, because telescopes and instruments are of different design. In the EUV range, the technology is strongly related to that utilized in X-ray astronomy, while in the UV range the instruments in many cases have their roots in optical astronomy. We will, therefore, describe the UV and EUV instruments in appropriate conciseness and refer to the respective chapters of this volume for more technical details.

Preprint (112 kb PDF file including figures)
Astrophysics (astro-ph): 1001.0294

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