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Built in 2004, the Skynet robotic telescope network originally consisted of six 0.4 m telescopes located at the Cerro-Tololo Inter-American Observatory in the Chilean Andes. The network was designed to carry out simultaneous…

Instrumentation and Methods for Astrophysics · Physics 2022-10-26 Dylan A. Dutton , Daniel E. Reichart , Joshua B. Haislip , Vladimir V. Kouprianov , Omar H. Shaban , Alan Vasquez Soto

The Cherenkov Telescope Array (CTA) will be the world's largest and by far most sensitive observatory for high-energy gamma rays. It will be capable of detecting gamma rays from extremely faint sources with unprecedented precision on energy…

Instrumentation and Methods for Astrophysics · Physics 2018-01-22 G. Maier , L. Arrabito , K. Bernlöhr , J. Bregeon , P. Cumani , T. Hassan , A. Moralejo

The Las Cumbres Observatory operates a fleet of robotically controlled telescopes currently two 2m, nine 1m, and ten 0.4m telescopes, distributed amongst six sites covering both hemispheres. Telescopes of an aperture class are equipped with…

Instrumentation and Methods for Astrophysics · Physics 2018-06-01 Daniel-Rolf Harbeck , Curtis McCully , Andrew Pickles , Nikolaus Volgenau , Patrick Conway , Brook Taylor

The Spanish partners of the future Cherenkov Telescope Array (CTA) have selected a candidate site for the Northern installation of CTA, at 3 km from the Observatorio del Teide (OT), in the Canary Island of Tenerife. As the OT is a very…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 Irene Puerto-Giménez , Markus Gaug , Rafael Barrena , Julio Castro , Michele Doro , Lluís Font , Miguel Nievas Rosillo , Jaime Zamorano

Recently obtained kinematic data has shown that the Large Magellanic Cloud (LMC) possesses an old stellar halo. In order to further characterize the properties of this halo, parametric King models are fit to the surface density of RR Lyrae…

Astrophysics · Physics 2009-11-10 David R. Alves

GAW is a "path-finder" experiment to test the feasibility of a new generation of Imaging Atmospheric Cherenkov telescopes that join high flux sensitivity with large field of view capability using Fresnel lens, stereoscopic observational…

We have carried out sub-mm 12CO(J=3-2) observations of 6 giant molecular clouds (GMCs) in the Large Magellanic Cloud (LMC) with the ASTE 10m sub-mm telescope at a spatial resolution of 5 pc and very high sensitivity. We have identified 32…

Knowledge of the Earth's atmospheric optical turbulence is critical for astronomical instrumentation. Not only does it enable performance verification and optimisation of existing systems but it is required for the design of future…

Instrumentation and Methods for Astrophysics · Physics 2018-06-13 J. Osborn , R. W. Wilson , M. Sarazin , T. Butterley , A. Chacón , F. Derie , O. J. D. Farley , X. Haubois , D. Laidlaw , M. LeLouarn , E. Masciadri , J. Milli , J. Navarrete , M. J. Townson

We have measured the topology (genus) of the density distribution of large-scale structure observed in the Las Campanas Redshift Survey (LCRS). The LCRS is complete to magnitude 17.5, and contains nearly 24000 galaxies with median redshift…

Astrophysics · Physics 2009-10-28 Wesley N. Colley

Investigating star formation requires precise knowledge of the properties of the dense molecular gas. The low metallicity and wide range of star formation activity of the Large and Small Magellanic Clouds make them prime laboratories to…

Massive Compact objects in the halo, known as MACHOs, have been postulated as the origin of a substantial fraction of `dark matter' known to exist in the haloes of galaxies$^{1,2}$. Paczy\'nski$^3$ has suggested that it might possible to…

Astrophysics · Physics 2015-06-24 Kailash C. Sahu

We report on the Iranian National Observatory (INO) ongoing site characterization studies for INO 3.4m optical telescope under development. Iran benefits from high altitude mountains and a relatively dry climate, thus offer many suitable…

Instrumentation and Methods for Astrophysics · Physics 2015-03-17 Habib G. Khosroshahi

We present an update of results from the search for microlensing towards the Large Magellanic Cloud (LMC) by EROS (Experience de Recherche d'Objets Sombres). We have now monitored 25 million stars over three years. Because of the small…

Astrophysics · Physics 2019-08-14 A. Milsztajn , T. Lasserre

In this paper we quantify the performances of an automated weather forecast system implemented on the Large Binocular Telescope (LBT) site at Mt. Graham (Arizona) in forecasting the main atmospheric parameters close to the ground. The…

Instrumentation and Methods for Astrophysics · Physics 2017-01-26 Alessio Turchi , Elena Masciadri , Luca Fini

The Simons Observatory (SO) will detect and map the temperature and polarization of the millimeter-wavelength sky from Cerro Toco, Chile across a range of angular scales, providing rich data sets for cosmological and astrophysical analysis.…

The Cherenkov Telescope Array (CTA) observatory, will be deployed over two sites in the two hemispheres. Both sites will be equipped with four Large Size Telescopes (LSTs), which are crucial to achieve the science goals of CTA in the 20-200…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 J. Cortina , M. Teshima

Apart from the Milky Way, the Large Magellanic Cloud (LMC) is the only other normal star-forming galaxy that was conclusively detected in high energy (> 100 MeV) gamma rays by the Energetic Gamma Ray Telescope (EGRET) on the Compton…

High Energy Astrophysical Phenomena · Physics 2019-08-13 T. A. Porter , J. Knodlseder

Detailed 4.8- and 8.6-GHz radio images of the entire Large Magellanic Cloud with half-power beamwidths of 33" at 4.8 GHz and 20" at 8.6 GHz have been obtained using the Australia Telescope Compact Array. A total of 7085 mosaic positions…

Astrophysics · Physics 2008-11-26 J. R. Dickel , V. J. McIntyre , R. A. Gruendl , D. K. Milne

In recent years, a significant number of observatories and universities have been planning to construct optical and infrared telescopes at the Lenghu site in Qinghai Province due to the site's excellent seeing and clear night sky fraction.…

Instrumentation and Methods for Astrophysics · Physics 2025-08-07 Taoran Li , Lu Feng

The High altitude Water Cherenkov (HAWC) Observatory has been completed and began full operation in early 2015. Located at an elevation of 4,100 m near the Sierra Negra volcano in the state of Puebla, Mexico, HAWC consists of 300 water…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Robert J. Lauer