منابع مشابه
Spectroscopy on Small Telescopes: the Echelle Spectrograph
In recent years there has been a trend toward the automation of modest sized observatories, especially those involved with photoelectric photometry. Although undoubtedly useful, there is clearly a need for more advanced instrumentation such as spectrographs. The relatively small telescope sizes places severe limits on the choice of spectrograph configuration. A fiber-fed echelle spectrograph is...
متن کاملAn echelle spectrometer-spectrograph for astronomical use.
A compact echelle spectrometer-spectrograph has been designed for use at the Cassegrain focus of the University of Wisconsin 91-cm telescope at Pine Bluff. Laboratory results obtained with this instrument show that it has great potential for both stellar and nebular studies. Typical photographs and photoelectric scans of laboratory spectra are shown. A method of determining the profile of the e...
متن کاملAdaptive optics echelle spectrograph for radial velocity studies
Radial velocity studies represent the most successful method to date for the detection of extrasolar planets. Although radial velocity (vr ) measurement precision of 3 m s –1 is routinely achieved in some programs, it is important to understand and minimize sources of experimental error. Furthermore, velocity variations resulting from astrophysical processes contribute to velocity errors, and m...
متن کاملAn Optical Ultra-High-Resolution Cross-dispersed Echelle Spectrograph with Adaptive Optics
A prototype cross-dispersed optical echelle spectrograph of very high resolution has been designed and built at Steward Observatory and tested at the Starfire Optical Range (SOR) 1.5 m telescope. It is the first spectrograph to take advantage of diffractionlimited images provided by adaptive optics in order to achieve a potential resolving power of R ∼ 600, 000. The wavelength coverage in a sin...
متن کاملECHELLE SPECTROSCOPY OF INTERSTELLAR ABSORPTION TOWARD k COLUMBAE WITH THE GODDARD HIGH RESOLUTION SPECTROGRAPH
Goddard High Resolution Spectrograph echelle-mode observations of the interstellar absorption lines of Mg II, Si IV, C IV, and N V toward k Columbae (HD 38666) are presented. The observations have a spectral resolution of 3.5 km s~1 and signal-to-noise ratios (S/Ns) of 20È200. The k Col sight line (l\ d \ 0.40 kpc, z\ [0.18 kpc) extends though the Local Bubble and the warm 237¡.3, b \ [27¡.1, n...
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ژورنال
عنوان ژورنال: Publications of the Astronomical Society of the Pacific
سال: 2016
ISSN: 0004-6280,1538-3873
DOI: 10.1088/1538-3873/128/970/125002