311 citations · 662 across the 11 of their papers we have counts for
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astro-ph2000★ 30 cited
The ORFEUS II Echelle Spectrometer: Instrument description, performance and data reduction
J. Barnstedt, N. Kappelmann, I. Appenzeller +11
During the second flight of the ORFEUS-SPAS mission in November/December 1996, the Echelle spectrometer was used extensively by the Principal and Guest Investigator teams as one of…
astro-ph1998★ 25 cited
ORFEUS-II Far-Ultraviolet Observations of 3C273: 1. Interstellar and Intergalactic Absorption Lines
Mark Hurwitz, Immo Appenzeller, Juergen Barnstedt +7
We present the first intermediate-resolution (lambda / 3000) spectrum of the bright quasi-stellar object 3C273 at wavelengths between 900 and 1200 A. Observations were performed wi…