Work

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

Year: 1995

Type: article

Abstract: 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 to simultaneously gather spectra over as much of the spectral range 3400A to 1 micron as practical, at a resolution R = lambda/delta-lambda ≃ 60,000 with signal-to-noise ratio of ~100 for stars down to magnitude 11, using 1-hour 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 ross disperser, and folded Schmidt camera with a Tektronix 2048 X 2048 CCD used at either of two foci, it has been in regularly-scheduled operation since April 1992. Design details and performance will be described.

Source: Publications of the Astronomical Society of the Pacific

DOI: 10.1086/133548

Authors: Robert G. Tull, Phillip J. MacQueen, Christopher Sneden, David L. Lambert

Institution: The University of Texas at Austin

Language: English

Topic: Astronomy and Astrophysical Research

Subfield: Instrumentation

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: National Science Foundation, National Aeronautics and Space Administration

Award: A New High Resolution Charge-Coupled Device Spectrometer for McDonald Observatory