scholarly journals ORFEUS observation of the central star of NGC 6543

1997 ◽  
Vol 180 ◽  
pp. 136-136
Author(s):  
J. Zweigle ◽  
M. Grewing ◽  
J. Barnstedt ◽  
M. Gölz ◽  
W. Gringel ◽  
...  
Keyword(s):  
Spectral Resolution ◽  
Planetary Nebula ◽  
Extreme Ultraviolet ◽  
Wavelength Region ◽  
Central Star ◽  
University Of California ◽  
Satellite Mission ◽  
Ultraviolet Spectrometer ◽  
Far Ultraviolet ◽  
The University

During the ORFEUS-SPAS (Orbiting Retrievable Far and Extreme Ultraviolet Spectrometer on the Shuttle Pallet Satellite) mission STS-51, flown in September 1993, we observed the central star of the planetary nebula NGC 6543 in the far ultraviolet (90 nm to 115 nm) wavelength region using the University of California, Berkeley spectrometer with a spectral resolution of 0.03 nm.

scholarly journals Observations of Local ISM Emission With the Berkeley EUV/FUV Shuttle Telescope

1984 ◽  
Vol 81 ◽  
pp. 344-347
Author(s):  
Christopher Martin ◽  
Stuart Bowyer
Keyword(s):  
Interstellar Medium ◽  
Spectral Resolution ◽  
Space Shuttle ◽  
Extreme Ultraviolet ◽  
Diffuse Background ◽  
Far Ultraviolet

AbstractThe Berkeley Extreme Ultraviolet/Far Ultraviolet Shuttle Telescope (BEST) will be launched on the Space Shuttle in November, 1984, as part of the NASA UVX project. The Berkeley spectrometer will make observations of the cosmic diffuse background in the 600-1900 Å band, with a spectral resolution of 10 Å. The sensitivity and spectral resolution of the instrument make it ideal for the study of components of the interstellar medium in the 104 - 106K range.

scholarly journals High-resolution spectroscopic study of the planetary nebula Abell 78

1999 ◽  
Vol 193 ◽  
pp. 374-375
Author(s):  
Selene Medina ◽  
Miriam Peña
Keyword(s):  
Chemical Composition ◽  
High Resolution ◽  
Spectroscopic Study ◽  
Spectral Resolution ◽  
Planetary Nebula ◽  
Planetary Nebulae ◽  
Central Star ◽  
Heavy Elements ◽  
Physical Parameters ◽  
Processed Material

High resolution optical spectra of the planetary nebula Abell 78 were gathered, covering the wavelength ranges 3500–6600 Å and 3358–7361 Å, with a spectral resolution of ∼0.1 Å. Two different regions of Abell 78 are analyzed: the strongest knot near the central star which is thought to be a mass-loaded wind from the central star, and the outer, hydrogen-rich envelope. Physical parameters and chemical composition of both regions are estimated. The inner knot appears to be cooler and denser than the hydrogen-rich envelope. The chemical composition of the inner knot shows that there is almost no hydrogen near the central star and the emission is dominated by helium and processed material which has been dredged-up from the inner layers of the star. The outer, hydrogen-rich envelope appears to be deficient in heavy elements, mainly in oxygen, compared to the average abundances that are found among galactic planetary nebulae.

The Extreme Ultraviolet Explorer Mission

1991 ◽  
Vol 9 (1) ◽  
pp. 156-157
Author(s):  
Barry Y. Welsh
Keyword(s):  
Extreme Ultraviolet ◽  
Grazing Incidence ◽  
Survey Instrument ◽  
University Of California ◽  
Explorer Mission ◽  
Deep Survey ◽  
Space Sciences ◽  
The University ◽  
Mission Profile ◽  
Euv Spectrometer

AbstractThe Extreme Ultraviolet Explorer (EUVE) is a NASA funded astronomy mission which will operate in the 70–760Å spectral hand. The science payload has been designed and built by the Space Sciences Laboratory at the University of California, Berkeley and consists of three grazing incidence scanning telescopes and an EUV spectrometer/deep survey instrument.We give an overview of the planned mission profile and briefly discuss the instrumentation which comprises the science payload. The EUVE is scheduled for launch in late August 1991.

scholarly journals The Far Ultraviolet Background: Dust Scattering and the Extragalactic Continuum

1990 ◽  
Vol 139 ◽  
pp. 229-230
Author(s):  
Mark Hurwitz ◽  
Stuart Bowyer ◽  
Christopher Martin
Keyword(s):  
Wavelength Range ◽  
Space Shuttle ◽  
Neutral Hydrogen ◽  
University Of California ◽  
Full Description ◽  
Wide Range ◽  
Far Ultraviolet ◽  
The University

NASA's Ultraviolet Experiment (UVX) payload, which flew aboard space shuttle Columbia in January 1986, contained a spectrograph built by the Space Astrophysics Group at the University of California, Berkeley. The wavelength range is 1400–1850 Å with a FWHM resolution of ~15 ± 2 Å. A full description of the instrument can be found in Martin and Bowyer (1984). The instrument was pointed at various regions of the sky for 8 nighttime orbits. Targets spanning a wide range of galactic latitudes and neutral hydrogen column densities were observed.

Outsourcing the Extreme Ultraviolet Explorer (EUVE) mission from NASA GSFC to the University of California, Berkeley

1997 ◽  
Author(s):  
Kevin Hartnett ◽  
Ronald Oliversen ◽  
William Guit ◽  
Brett Stroozas ◽  
Kevin Hartnett ◽  
...  
Keyword(s):  
Extreme Ultraviolet ◽  
University Of California ◽  
The University
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