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A&A 407, 1157-1164 (2003)
DOI: 10.1051/0004-6361:20030885
A flux-calibrated, high-resolution atlas of optical sky emission from UVES
R. W. HanuschikEuropean Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany
(Received 18 April 2003 / Accepted 19 May 2003)
Abstract
This paper presents a flux-calibrated, high-resolution, high-SNR atlas
of optical and near-IR sky emission. It provides a complete template
of the high-resolution night-sky emission spectrum with the deepest
exposures ever obtained from the ground.
The data have been acquired
by UVES, ESO's echelle spectrograph at the 8.2-m UT2 telescope of the Very
Large Telescope (VLT).
Raw data stacks with up to 16 hours of integration time have been combined.
The spectrum covers the range 3140-10 430 Å at a resolving power
of about 45 000. A total of 2810 sky emission lines have been
measured. This high-resolution spectrum is intended to be used
for the identification of previously unknown faint sky lines,
for simulations of ground based observations where the sky background is
important, as a template for checks on the accuracy and stability of
the wavelength scale, and as a reference for the reduction of spectra of
faint objects.
Key words: line: identification -- atomic data -- atmospheric effects -- atlases -- techniques: spectroscopic
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© ESO 2003