The method for measuring the groove density of variable-line-space gratings with elimination of the eccentricity effect

2015 ◽  
Vol 86 (2) ◽  
pp. 023109 ◽  
Author(s):  
Qingbo Wang ◽  
Zhengkun Liu ◽  
Huoyao Chen ◽  
Yu Wang ◽  
Xiaolong Jiang ◽  
...  
Keyword(s):  
Eccentricity Effect ◽  
Variable Line ◽  
Line Space

scholarly journals The Extreme Ultraviolet Explorer Mission

1992 ◽  
Vol 9 ◽  
pp. 247-254 ◽  
Author(s):  
Stuart Bowyer ◽  
Patrick Jelinsky ◽  
Carol Christian ◽  
Isabel Hawkins
Keyword(s):  
Extreme Ultraviolet ◽  
Variable Line ◽  
Explorer Mission ◽  
Sky Survey ◽  
International Ultraviolet Explorer ◽  
Line Space ◽  
Made In

AbstractThe Extreme Ultraviolet Explorer mission is described. For the first six months, an all-sky survey will be carried out covering 90 to 750 Å, or essentially the entire extreme ultraviolet (EUV) bandpass. This EUV survey will be made in four bands, or colors: λλ 90-150 Å, 170-250 Å, 400-600 Å, and 550-750 Å. A portion of the sky which is free from the normally intense 304 Å geocoronal helium background will be surveyed at greater sensitivity; the wavelength coverage of this band is from 90 to 400 Å. Following the sky survey portion of the mission, spectroscopy of individual sources will be carried out. Three spectrometers employing novel variable line-space gratings will provide spectra with ~1 Å resolution over the band from 70 to 760 Å. This spectroscopy will be carried out by guest observers chosen by NASA in a manner roughly analogous to the International Ultraviolet Explorer (IUE) guest observer program.

Variable line-space gratings: new designs for use in grazing incidence spectrometers

1983 ◽  
Vol 22 (24) ◽  
pp. 3921 ◽  
Author(s):  
Michael C. Hettrick ◽  
Stuart Bowyer
Keyword(s):  
Grazing Incidence ◽  
Variable Line ◽  
Line Space

Design of high-density concave variable line space grating based on Lyman ultraviolet

2021 ◽  
Author(s):  
Tao Ren ◽  
Keqiang Qiu ◽  
Zhengkun Liu ◽  
Yilin Hong ◽  
Xiangdong Xu ◽  
...  
Keyword(s):  
High Density ◽  
Variable Line ◽  
Line Space

Development of Two-Dimensional Hexagonal Lattice Variable Line-Space Grating Based on Polymer-Dispersed Liquid Crystal

2018 ◽  
Vol 45 (8) ◽  
pp. 0809001
Author(s):  
缪涛 Miao Tao ◽  
郑继红 Zheng Jihong ◽  
王康妮 Wang Kangni ◽  
刘悠嵘 Liu Yourong ◽  
黄新荣 Huang Xinrong ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Hexagonal Lattice ◽  
Two Dimensional ◽  
Polymer Dispersed Liquid Crystal ◽  
Variable Line ◽  
Polymer Dispersed ◽  
Lattice Variable ◽  
Line Space

scholarly journals Toroidal variable-line-space gratings: the good, the bad, and the ugly

2009 ◽  
Author(s):  
Edward West ◽  
Ken Kobayashi ◽  
Jonathan Cirtain ◽  
Allen Gary ◽  
John Davis ◽  
...  
Keyword(s):  
Variable Line ◽  
Line Space
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