منابع مشابه
Automation of a plane grating spectrograph
A Zeiss model PGS-2 plane grating spectrograph was automated by replacing its photograph film detection system with an EGG-Reticon 1024S photodiode array (PDA) and by controlling the main instrument functions through the use of a home-made interface connected to a microcomputer. The array was cooled by four Peltier elements to allow integration of the emitted light for up to 40 s. The interface...
متن کاملA slit grating spectrograph for quantitative soft x-ray spectroscopy
In this article we describe a new slit grating spectrograph which is based on an e-beam written 10 000 linepairs/mm freestanding transmission diffraction grating. In combination with a thinned, back-illuminated charge coupled device ~CCD!, the spectrograph allows for real-time spectroscopy of laser-produced plasma x-ray sources within the wavelength region l51–20 nm. Calibration of grating and ...
متن کاملSpectrally resolved optical microscopy using a transmission grating spectrograph: importance of spatial selection.
Spectral imaging using transmission grating (TG) based spectrographs has not been effectively utilized for spatially resolved absorption measurements of solid samples, and the role of spatial selection in spectral characteristics remains unexplored. We describe a simple yet efficient method to obtain reliable absorption spectra at sub micrometer spatial resolution for both non-fluorescent and f...
متن کاملThe Spectrograph
JILA Fellow John Hall will deliver the 2006 Richard C. Lord Lecture on May 2, on “Optical clocks, combs and coherence: defining and measuring optical frequency.” Born in 1934 in Denver, Hall is an alumnus of the Carnegie Institute of Technology, where he received B.S., M.S. and Ph.D. degrees. He conducted postdoctoral studies at the Department of Commerce’s National Bureau of Standards, now cal...
متن کاملSpectrograph Imager on Keck
Using the Echellete Spectrograph Imager (ESI) on the Keck II 10-m telescope we have measured the redshifts of the host galaxies of gamma-ray bursts GRB990506 and GRB000418, z = 1.30658 ± 0.00004 and 1.1181 ± 0.0001, respectively. Thanks to the excellent spectral resolution of ESI (λ/∆λ = 13000) we resolved the [O II] 3727 doublet in both cases. The measured redshift of GRB990506 is the highest ...
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ژورنال
عنوان ژورنال: Journal of the Spectroscopical Society of Japan
سال: 1957
ISSN: 1884-6785,0038-7002
DOI: 10.5111/bunkou.5.4_3