High Efficiency Photon Counting Detectors for the FAUST Spacelab Far Ultraviolet Astronomy Payload

1987 ◽  
Vol 34 (1) ◽  
pp. 41-45 ◽  
Author(s):  
O. H. W. Siegmund ◽  
M. Lampton ◽  
J. Bixler ◽  
J. Vallerga ◽  
S. Bowyer
Keyword(s):  
High Efficiency ◽  
Photon Counting ◽  
Ultraviolet Astronomy ◽  
Photon Counting Detectors ◽  
Far Ultraviolet

scholarly journals Extreme and Far Ultraviolet Astronomy from Voyagers 1 and 2

1990 ◽  
Vol 123 ◽  
pp. 49-57
Author(s):  
J.B. Holberg
Keyword(s):  
Photon Counting ◽  
Large Field ◽  
Data Sets ◽  
Diffuse Emission ◽  
Ultraviolet Astronomy ◽  
Wide Range ◽  
Valuable Complement ◽  
Scientific Results ◽  
Stellar Sources ◽  
Far Ultraviolet

AbstractThe instrumental characteristics, observational capabilities and scientific results of the Voyager 1 and 2 ultraviolet spectrometers are reviewed. These instruments provide current and ongoing access to low resolution spectra for a wide variety of astronomical sources in the 500 to 1700 Å band. Observations of the brightest OB stars and hot subluminous stars as faint as V = 15 mag. are possible. In the EUV, at wavelengths shortward of 900 Å, several new sources have been detected and a host of potential sources ruled out. In the Far UV, particularly at wavelengths between 900 and 1200 Å, Voyager is capable of observing a wide range of stellar and non-stellar sources. Such observations can often provide a valuable complement to IUE and other data sets at longer wavelengths. The Voyager spectrometers have proved remarkably stable photon counting instruments, capable of extremely long integration times. The long integration times, relatively large field of view, and location in the outer solar system also provide an ideal platform for observations of sources of faint diffuse emission, such as nebulae and the general sky background.

scholarly journals A fiber-optic three-channel photometer for simultaneous UBVRI measurements - improved design and new results

1986 ◽  
Vol 118 ◽  
pp. 61-64
Author(s):  
H. Barwig ◽  
R. Schoembs
Keyword(s):  
Optical Fibers ◽  
High Efficiency ◽  
Variable Star ◽  
Background Radiation ◽  
Photon Counting ◽  
Wavelength Region ◽  
Comparison Star ◽  
High Time Resolution ◽  
Photon Counting Detectors ◽  
Improved Design

A modern photometer designed for variable star observation should meet the following specifications: 1. Simultaneous measurements of object, comparison star and sky in order to allow compensation of changing atmospheric transparency and background radiation. 2. Simultaneous multicolor measurements of each channel yielding high efficiency and accurate colors. 3. Coverage of a large wavelength region (U-I) with high time resolution. A photometer, fitting these requirements has been designed at the Universitäts-Sternwarte München. In principle light from three sources in the focal plane of a telescope is guided through optical fibers to three spectrographs, each splitting the incoming signal into five wavelength regions. The resulting 15 output channels are linked to photon counting detectors. Their signals finally are processed in a microcomputer.

Tantalum superconducting tunnel junctions for photon counting detectors

2002 ◽  
Vol 12 (3) ◽  
pp. 145-148
Author(s):  
C. Jorel ◽  
P. Feautrier ◽  
J.-C. Villégier ◽  
A. Benoit
Keyword(s):  
Tunnel Junctions ◽  
Photon Counting ◽  
Superconducting Tunnel Junctions ◽  
Photon Counting Detectors
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