Millimetre Astronomy from the High Antarctic Plateau: Site Testing at Dome C

Valenziano, L.; Dall'Oglio, G.

doi:10.1071/as99167

Cited by 43 publications

(42 citation statements)

References 17 publications

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“…If these are the main contributors to the aerosols, then on the summit of the Plateau, where wind levels are lower, the visibility would generally be expected to be higher than at the Pole and therefore the site would be superior for near-IR and mid-IR observations. At the present time, no IR measurements have been made on the higher Plateau, although Valenziano & Dall'Oglio (1999) report good sub-mm conditions at Dome C.…”

Section: The Effect Of Aerosolsmentioning

confidence: 99%

Infrared and Submillimetre Observing Conditions on the Antarctic Plateau

Hidas

Burton

Chamberlain

et al. 2000

Publ. – Astron. Soc. Aust

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Abstract:The Antarctic Plateau provides the best terrestrial sites for infrared (IR) and submillimetre (sub-mm) astronomy. In this paper we examine the relative importance of temperature, aerosol content and precipitable water vapour to determine which parameters have the greatest influence on atmospheric transmission and sky brightness. We use the atmospheric modelling program MODTRAN to model the observed sky spectrum at the South Pole from the near-IR to the sub-mm. We find that temperature and aerosol content determine the quality of near-IR observing conditions, aerosol content is the determining factor in the mid-IR up to 20 µ m, while at longer wavelengths, including the sub-mm, it is the water vapour content that matters. Finding a location where aerosol levels are minimised is a key constraint in determining the optimum site on the Antarctic Plateau for an IR observatory.

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Section: The Effect Of Aerosolsmentioning

confidence: 99%

Infrared and Submillimetre Observing Conditions on the Antarctic Plateau

Hidas

Burton

Chamberlain

et al. 2000

Publ. – Astron. Soc. Aust

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“…4) and adding counterweights on the telescope mounts. Vibrations were reduced to an acceptable value as long as the wind speed is lower than 3 to 4 m/s, which occurs 80% to 90% of the time (Valenziano et al 1999). Different tests were performed to find the best configuration for the orientation of the 2-hole mask of each telescope.…”

Section: Dome C Gsm Version and Instrument Set-upmentioning

confidence: 99%

First statistics of the turbulence outer scale at Dome C

Ziad¹,

Aristidi²,

Agabi³

et al. 2008

A&A

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Context. The outer scale of wavefronts is of interest for the dimensioning and the optimisation of the High Angular Resolution techniques such as Interferometry and Adaptive Optics, particularly for the new generation of telescopes such as the Extremely Large Telescopes (ELT). Aims. We aim to provide the first statistics of the outer scale at Dome C site in Antarctica to finalize the characterization of this site. Methods. A new version of the Generalized Seeing Monitor has been developed for extremely cold conditions. Two DIMMs (Differential Image Motion Monitor) were coupled to extract Angle-of-Arrival (AA) fluctuations using CCD detectors. Correlations of these AA fluctuations for different baselines lead to outer scale estimations. Results. For the first time, statistics of the outer scale at Dome C are provided leading to small values in the surface layer at Dome C. These small outer scale values compared to temperate sites considerably reduce the fringe excursion of interferometers and the low orders of the normalized amplitude of atmospheric Zernike coefficients, particularly the tip-tilt. Conclusions. The Dome C small outer scale combined with the large coherence time and large isoplanatic angle are very useful for the development of Adaptive Optics systems and long-baseline interferometers.

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“…Only at Dome C is a permanent manned station under construction (Godon & Cucinotta 2000;Candidi & Lori 2003). Preliminary site testing in the millimetre wavelength region at Dome C carried out in 1995 (Valenziano & Dall'Oglio 1999) resulted in stability measurements and encouraging upper limits for the atmospheric precipitable water vapour (PWV).…”

Section: Introductionmentioning

confidence: 99%

Submillimeter Site Testing at Dome C, Antarctica

Calisse

Ashley

Burton

et al. 2004

Publ. – Astron. Soc. Aust

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Abstract:We have developed a 350 µm radiometer to perform automated site testing in remote regions of Antarctica. In summer 2000-2001 the instrument operated at Concordia, a new station under construction at Dome C on the Antarctic Plateau. We present the results, and compare them with the atmospheric opacity measured at the South Pole in the same five-week period. During these five weeks, observing conditions at Dome C were, on average, substantially better than those at the South Pole.

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Millimetre Astronomy from the High Antarctic Plateau: Site Testing at Dome C

Cited by 43 publications

References 17 publications

Infrared and Submillimetre Observing Conditions on the Antarctic Plateau

Infrared and Submillimetre Observing Conditions on the Antarctic Plateau

First statistics of the turbulence outer scale at Dome C

Submillimeter Site Testing at Dome C, Antarctica

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