The high-resolution cross-dispersed echelle white-pupil spectrometer of the McDonald Observatory 2.7-m telescope

Autor:	Phillip J. MacQueen, Christopher Sneden, David L. Lambert, Robert G. Tull
Rok vydání:	1995
Předmět:	Physics Spectrometer business.industry Resolution (electron density) Astronomy and Astrophysics Schmidt camera law.invention Telescope Stars Optics Space and Planetary Science Observatory law Magnitude (astronomy) Prism business
Zdroj:	Publications of the Astronomical Society of the Pacific. 107:251
ISSN:	1538-3873 0004-6280
DOI:	10.1086/133548
Popis:	A new high-resolution cross-dispersed echelle spectrometer has been installed at the coude focus of the McDonald Observatory 2.7-m telescope. Its primary goal was simultaneously to gather spectra over as much of the spectral range 3400 A to 1 micrometer as practical, at a resolution R identical with lambda/Delta lambda which approximately = 60,000 with signal-to-noise ratio of approximately 100 for stars down to magnitude 11, using 1-h exposures. In the instrument as built, two exposures are all that are needed to cover the full range. Featuring a white-pupil design, fused silica prism cross disperser, and folded Schmidt camera with a Tektronix 2048x2048 CCD used at either of two foci, it has been in regularly scheduled operation since 1992 April. Design details and performance are described.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5d1147b9570b6cec7904f5040fcbf71f https://doi.org/10.1086/133548 Zobrazit plný text záznamu