Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994pasp..106..983a&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 106, no. 703, p. 983-991
Astronomy and Astrophysics
Astronomy
46
Control, Faint Objects, Galaxies, Mechanical Devices, Optical Equipment, Spectrographs, Spectroscopic Telescopes, Astronomical Spectroscopy, Charge Coupled Devices, Magnitude, Spectrum Analysis
Scientific paper
Low-Dispersion Survey Spectrograph (LDSS-2) is a wide-field, multiaperture spectrograph recently installed on the 4.2-m William Herschel Telescope (WHT) in La Palma. The spectrograph has high system throughput (including the telescope and atmosphere) of approximately 20% at blaze. The field of view is 11.5 arcmin, allowing it to produce spectra of several tens of objects simultaneously at spectral resolutions up to R = 1000. The multiaperture masks are of exceptional quality and can be designed and manufactured rapidly at the telescope to improve target-mask registration and observational flexibility. This paper describes the instrument, the mask manufacturing facility, and the observing procedures required to acquire the target fields. Finally it presents examples of data obtained during the first commissioning run.
Allington-Smith Jeremy
Breare Mike
Ellis Richard
Gellatly Dave
Glazebrook Karl
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