scholarly journals Far and Extreme Ultraviolet Astronomy with Orfeus

1990 ◽  
Vol 123 ◽  
pp. 177-184
Author(s):  
G. Krämer ◽  
J. Barnstedt ◽  
N. Eberhard ◽  
M. Grewing ◽  
W. Gringel ◽  
...  
Keyword(s):  
Spectral Range ◽  
White Dwarf ◽  
Extreme Ultraviolet ◽  
Normal Incidence ◽  
Ultraviolet Astronomy ◽  
Range Resolution ◽  
Spectroscopic Investigations ◽  
Ultraviolet Spectrometer

AbstractORFEUS (Orbiting and Retrievable Far and Extreme Ultraviolet Spectrometer) is a 1 m normal incidence telescope for spectroscopic investigations of cosmic sources in the far and extreme ultraviolet spectral range. The instrument will be integrated into the freeflyer platform ASTRO-SPAS. ORFEUS-SPAS is scheduled with STS ENDEAVOUR in September 1992. We describe the telescope with its two spectrometers and their capabilities i.e. spectral range, resolution and overall sensitivity. The main classes of objects to be observed with the instrument are discussed and two examples of simulated spectra for the white dwarf HZ43 and an O9-star in the LMC are shown.

Normal Incidence Multilayer Mirrors For Extreme Ultraviolet Astronomy

1984 ◽  
Author(s):  
Robert A. Stern ◽  
Bernhard M. Haisch ◽  
George Joki ◽  
Richard C. Catura
Keyword(s):  
Extreme Ultraviolet ◽  
Normal Incidence ◽  
Multilayer Mirrors ◽  
Ultraviolet Astronomy

A Compact Spectral Range and Matching Extreme‐Ultraviolet Spectrometer for the Simultaneous Study of 1 x 104–2 x 107K Solar Plasmas

1998 ◽  
Vol 502 (2) ◽  
pp. 997-1005 ◽  
Author(s):  
U. Feldman ◽  
C. M. Brown ◽  
J. M. Laming ◽  
J. F. Seely ◽  
G. A. Doschek
Keyword(s):  
Spectral Range ◽  
Extreme Ultraviolet ◽  
Simultaneous Study ◽  
Ultraviolet Spectrometer ◽  
Solar Plasmas

scholarly journals Absolute sensitivity calibration of an extreme ultraviolet spectrometer for tokamak measurements

2017 ◽  
Vol 12 (01) ◽  
pp. P01006-P01006 ◽  
Author(s):  
R. Guirlet ◽  
J.L. Schwob ◽  
O. Meyer ◽  
S. Vartanian
Keyword(s):  
Extreme Ultraviolet ◽  
Absolute Sensitivity ◽  
Ultraviolet Spectrometer

A HIGH EFFICIENCY IMAGING EXTREME ULTRAVIOLET SPECTROMETER

1991 ◽  
pp. 380-389
Author(s):  
JEFFREY S. MORGAN ◽  
J. GETHYN TIMOTHY ◽  
DAVID C. SLATER ◽  
MARTIN C.E. HUBER ◽  
GIUSEPPE TONDELLO ◽  
...  
Keyword(s):  
High Efficiency ◽  
Extreme Ultraviolet ◽  
Ultraviolet Spectrometer

scholarly journals Extreme Ultraviolet Spectroscopy of Magnetic Cataclysmic Variables

1996 ◽  
Vol 152 ◽  
pp. 309-316
Author(s):  
Frits Paerels ◽  
Min Young Hur ◽  
Christopher W. Mauche
Keyword(s):  
High Resolution ◽  
White Dwarf ◽  
Extreme Ultraviolet ◽  
Cataclysmic Variables ◽  
Ultraviolet Spectroscopy ◽  
Temperature Structure ◽  
Polar Cap ◽  
Ultraviolet Emission ◽  
X Ray ◽  
Magnetic Cataclysmic Variables

A longstanding problem in the interpretation of the X-ray and extreme ultraviolet emission from strongly magnetic cataclysmic variables can be addressed definitively with high resolution EUV spectroscopy. A detailed photospheric spectrum of the accretion-heated polar cap of the white dwarf is sensitive in principle to the temperature structure of the atmosphere. This may allow us to determine where and how the bulk of the accretion energy is thermalized. The EUVE data on AM Herculis and EF Eridani are presented and discussed in this context.

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