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10 papers · 2 filters
Measuring a Cherenkov ring in the radio emission from air showers at 110-190 MHz with LOFAR
A. Nelles, P. Schellart, S. Buitink +66
Measuring radio emission from air showers offers a novel way to determine properties of the primary cosmic rays such as their mass and energy. Theory predicts that relativistic tim…
The LOFAR long baseline snapshot calibrator survey
J. Moldón, A. T. Deller, O. Wucknitz +82
Aims. An efficient means of locating calibrator sources for International LOFAR is developed and used to determine the average density of usable calibrator sources on the sky for s…
Astrometric Calibration of the Gemini NICI Planet-Finding Campaign
Thomas L. Hayward, Beth A. Biller, Michael C. Liu +6
We describe the astrometric calibration of the Gemini NICI Planet-Finding Campaign. The Campaign requires a relative astrometric accuracy of 20 mas across multi-year time…
Wide-field adaptive optics performance in cosmological deep fields for multi-object spectroscopy with the European Extremely Large Telescope
Alastair Basden, Chris Evans, Tim Morris
A multi-object spectrograph on the forthcoming European Extremely Large Telescope will be required to operate with good sky coverage. Many of the interesting deep cosmological fiel…
The Visible and Infrared Survey Telescope for Astronomy (VISTA): Design, Technical Overview and Performance
Will Sutherland, Jim Emerson, Gavin Dalton +19
The Visible and Infrared Survey Telescope for Astronomy (VISTA) is the 4-metre wide-field survey telescope at ESO's Paranal Observatory, equipped with the world's largest near-infr…
ULTRASPEC: a high-speed imaging photometer on the 2.4-m Thai National Telescope
V. S. Dhillon, T. R. Marsh, D. C. Atkinson +18
ULTRASPEC is a high-speed imaging photometer mounted permanently at one of the Nasmyth focii of the 2.4-m Thai National Telescope (TNT) on Doi Inthanon, Thailand's highest mountain…