منابع مشابه
The 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 ...
متن کاملSpace telescope Imaging Spectrograph
We acquired spectra of 24 LMC PNe in the 1150–3000 Å range in order to determine carbon and other ionic abundances. The sample more than doubles the number of LMC PNe with good quality UV spectra in this wavelength range, and whose optical images are available in the HST archive. The Space Telescope Imaging Spectrograph was used with a very large aperture to obtain virtually slit-less spectra, ...
متن کاملThe Wide Field Spectrograph ( WiFeS )
This paper describes the Wide Field Spectrograph (WiFeS) under construction at the Research School of Astronomy and Astrophysics (RSAA) of the Australian National University (ANU) for the ANU 2.3m telescope at the Siding Spring Observatory. WiFeS is a powerful integral field, double-beam, concentric, image-slicing spectrograph designed to deliver excellent thoughput, wavelength stability, spect...
متن کاملFiber-assisted single-photon spectrograph
We demonstrate the implementation of a fiber-integrated spectrograph utilizing chromatic group velocity dispersion (GVD) in a single-mode fiber. By means of GVD we stretch an ultrafast pulse in time in order to spectrally resolve single photons in the time domain, detected by single-photon counting modules with very accurate temporal resolution. As a result, the spectrum of a very weak pulse is...
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 1951
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.1745754