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Optical seeing measurements carried out at Sierra Negra, the site of the Large Millimeter Telescope, are reported. The site, one of the highest peaks of Central Mexico, offers good coverage of Northern and Southern hemispheres and we have…

Astrophysics · Physics 2009-11-07 Esperanza Carrasco , Alberto Carraminana , Jose Luis Aviles , Omar Yam

The VST (VLT Survey Telescope) is a 2.6 m class Alt-Az telescope to be installed at Mount Paranal in the Atacama desert, Chile, in the European Southern Observatory (ESO) site. The VST is a wide-field imaging facility planned to supply…

Astrophysics · Physics 2007-05-23 D. Mancini , P. Schipani , G. Mazzola , L. Marty , M. Brescia , F. Cortecchia , F. Perrotta , E. Rossi

An array of large observational programs using ground-based and space-borne telescopes is planned in the next decade. The forthcoming wide-field sky surveys are expected to deliver a sheer volume of data exceeding an exabyte. Processing the…

Instrumentation and Methods for Astrophysics · Physics 2023-05-26 Kana Moriwaki , Takahiro Nishimichi , Naoki Yoshida

The Latin American Giant Observatory (LAGO) is an extended cosmic ray observatory composed of a network of water-Cherenkov detectors (WCD) spanning over different sites located at significantly different altitudes (from sea level up to more…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 Iván Sidelnik , Hernán Asorey

The Cherenkov Telescope Array (CTA) is a future ground-based gamma-ray observatory that will provide unprecedented sensitivity and angular resolution for the detection of gamma rays with energies above a few tens of GeV. In comparison to…

Instrumentation and Methods for Astrophysics · Physics 2019-08-07 Victor Barbosa Martins , Markus Garczarczyk , Gerrit Spengler , Ullrich Schwanke

To mitigate the radar and communication frequency overlapping caused by massive devices access, we propose a novel joint communication and sensing (JCS) system in this paper, where a micro base station (MiBS) can realize target sensing and…

The James Webb Space Telescope, launched in 2021, is an infrared observatory of novel design: deployable, with active optics, fully open to space for radiative cooling and orbiting the Lagrange point no. 2. This article explains the…

Aims. Radio observing efficiency can be improved by calibrating and reducing the observations in total power mode rather than in frequency, beam, or position-switching modes. Methods. We selected a sample of spectra obtained from the…

Instrumentation and Methods for Astrophysics · Physics 2020-11-11 Laurent Pagani , David Frayer , Bruno Pagani , Charlène Lefèvre

Surveillance of objects in the cislunar domain is challenging due primarily to the large distances (10x the Geosynchronous orbit radius) and total volume of space to be covered. Ground-based electro-optical observations are further hindered…

Instrumentation and Methods for Astrophysics · Physics 2024-12-05 Yancey Sechrest , Marion Vance , Christian Ward , William Priedhorsky , Robert Hill , W Thomas Vestrand , Przemyslaw Wozniak

Strabismus is one of the most influential ophthalmologic diseases in human's life. Timely detection of strabismus contributes to its prognosis and treatment. Telemedicine, which has great potential to alleviate the growing demand of the…

Computer Vision and Pattern Recognition · Computer Science 2018-12-04 Jiewei Lu , Zhun Fan , Ce Zheng , Jingan Feng , Longtao Huang , Wenji Li , Erik D. Goodman

The Large Synoptic Survey Telescope (LSST) will use an active optics system (AOS) to maintain alignment and surface figure on its three large mirrors. Corrective actions fed to the LSST AOS are determined from information derived from 4…

Instrumentation and Methods for Astrophysics · Physics 2015-10-26 Bo Xin , Chuck Claver , Ming Liang , Srinivasan Chandrasekharan , George Angeli , Ian Shipsey

The construction of the Cherenkov Telescope Array is expected to start soon. We will present the baseline methods and their extensions currently foreseen to calibrate the observatory. These are bound to achieve the strong requirements on…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 Markus Gaug , Michael Daniel , David Berge , Raquel de los Reyes , Michele Doro , Andreas Foerster , Maria Concetta Maccarone , Dan Parsons , Christopher van Eldik

In Wireless Networked Control Systems (WNCSs), the feedback control loops are closed over a wireless communication network. The proliferation of WNCSs requires efficient network resource management mechanisms since the control performance…

Systems and Control · Electrical Eng. & Systems 2024-01-29 Polina Kutsevol , Onur Ayan , Nikolaos Pappas , Wolfgang Kellerer

The James Webb Space Telescope will enable a wealth of new scientific investigations in the near- and mid-infrared, with sensitivity and spatial/spectral resolution greatly surpassing its predecessors. In this paper, we focus upon Solar…

MALTA is part of the Depleted Monolithic Active Pixel sensors designed in Tower 180nm CMOS imaging technology. A custom telescope with six MALTA planes has been developed for test beam campaigns at SPS, CERN, with the ability to host…

An efficient sky data reconstruction derives from a precise characterization of the observing instrument. Here we describe the reconstruction of performances of a single-pixel 4-band photometer installed at MITO (Millimeter and Infrared…

Astrophysics · Physics 2009-11-07 G. Savini , A. Orlando , E. S. Battistelli , M. De Petris , L. Lamagna , G. Luzzi , E. Palladino

Users of astronomical observatories rely on Exposure Time Calculators (ETC) to prepare their proposals and then their observations. The ETC is therefore a crucial element in an observatory's data workflow and in particular is key to…

Instrumentation and Methods for Astrophysics · Physics 2024-07-04 Henri M. J. Boffin , Jakob Vinther , Gurvan Bazin , David Huerta , Yves Jung , Lars K. Lundin , Malgorzata Stellert

LAGO, the Latin American Giant Observatory, is an extended cosmic ray observatory, consisting of a wide network of water Cherenkov detectors located in 10 countries. With different altitudes and geomagnetic rigidity cutoffs, their…

Instrumentation and Methods for Astrophysics · Physics 2022-04-07 Antonio Juan Rubio-Montero , Raúl Pagán-Muñoz , Rafael Mayo-García , Alfonso Pardo-Diaz , Iván Sidelnik , Hernán Asorey

TeraNet is a new three-node OGS network that has been established in Western Australia. The network is built to support a broad range of space missions operating between LEO and the Moon, using both conventional and advanced optical…

As the treasure house of nature, the ocean contains abundant resources. But the coral reefs, which are crucial to the sustainable development of marine life, are facing a huge crisis because of the existence of COTS and other organisms. The…

Computer Vision and Pattern Recognition · Computer Science 2022-07-05 Jingyao Wang , Naigong Yu