Now showing items 1-16 of 16

    • A FPGA-based fast converging digital adaptive filter for real time RFI mitigation on ground based radio telescopes 

      Finger Camus, Ricardo; Curotto, F.; Fuentes, R.; Duan, R.; Bronfman Aguiló, Leonardo; Li, D. (IOP Publishing Ltd, 2018)
      Radio Frequency Interference (RFI) is a growing concern in the radio astronomy community. Single-dish telescopes are particularly susceptible to RFI. Several methods have been developed to cope with RF-polluted environments, ...
    • ALMA band 1 optics (35-50 GHz): tolerance analysis, effect of cryostat infrared filters and cold beam measurements 

      González, A.; Tapia, V.; Finger Camus, Ricardo; Huang, C. D.; Asayama, S.; Huang, Y. D. (Springer, 2017)
      The Atacama Large Millimeter/Sub-millimeter Array (ALMA) is currently the largest (sub-)mm wave telescope in the world and will be used for astronomical observations in all atmospheric windows from 35 to 950 GHz when ...
    • Design and construction of a digital sideband separating spectrometer for the 1.2-meter southern radio telescope 

      Finger Camus, Ricardo (Universidad de Chile, 2013)
      Los receptores de doble banda lateral (2SB) son particularmente útiles para la observación de espectros astronómicos complejos en un amplio rango de frecuencias. Son extensamente utilizados en radio astronomía siendo sus ...
    • Design and measurements of an optical system for Alma Band 1 

      Tapia Labarca, Valeria Victoria (Universidad de Chile, 2015)
      El proyecto astronómico ALMA, Atacama Large Millimeter/submillimeter Array, es el radiobservatorio interferométrico más grande del mundo. Se compone de 66 antenas con diámetros de 7 y 12~m, ubicadas en el norte de Chile a ...
    • Diseño e implementación de un espectrómetro basado en FPGA, de ancho de banda seleccionable para aplicaciones astronómicas 

      Huaracán Durán, Edgardo Antonio (Universidad de Chile, 2014)
      El auge que ha presentado en los últimos años la Astronomía observacional en Chile, producto de las inigualables condiciones ambientales del desierto de Atacama, ha generado la necesidad de desarrollar tecnologías afines ...
    • Diseño e implementación de un espectrómetro de alta resolución basado en FPGA para análisis de señales radioastronómico 

      Sapunar Opazo, Raúl Ignacio (Universidad de Chile, 2015)
      Un espectrómetro de alta resolución se usa en radioastronomía para observar espectros de nubes moleculares de dinámica compleja con un amplio rango de velocidades. Dicho instrumento corresponde a un tipo de Back End, el ...
    • Diseño y Construcción de la Etapa Analógica de un Interferometro de Dos Antenas 

      Fariña Carmona, Jaime Esteban (Universidad de ChileCyberDocs, 2010)
      La presente memoria describe el diseño y construcción de la etapa analógica de un interferómetro de dos antenas que observe las regiones HI en torno a 1420MHz. El trabajo realizado consiste en diseñar y construir dos ...
    • A Dual Ridge Broadband Orthomode Transducer for the 7-mm Band 

      Reyes Guzmán, Nicolás Andrés; Zorzi Avendaño, Pablo Ignacio; Pizarro Lucero, José; Finger Camus, Ricardo; Mena Mena, Fausto Patricio; Bronfman Aguiló, Leonardo (SPRINGER, 2012-12)
      In this work we present a Q-band waveguide orthomode transducer (OMT) based on a dual ridge structure. It was designed to be used in astronomical projects were an excellent broad-band performance is mandatory. Of particular ...
    • Dust-gas scaling relations and oh abundance in the galactic ISM 

      Nguyen, Hiep; Dawson, J.; Miville-Deschenes, M.-A.; Tang, Ningyu; Li, Di; Heiles, Carl; Murray, Claire; Stanimirovic, Snezana; Gibson, Steven; McClure-Griffiths, N.; Troland, Thomas; Bronfman Aguiló, Leonardo; Finger Camus, Ricardo (IOP Publishing, 2018-07-20)
      Observations of interstellar dust are often used as a proxy for total gas column density N-H. By comparing Planck thermal dust data (Release 1.2) and new dust reddening maps from Pan-STARRS 1 and 2MASS, with accurate ...
    • Effect of parasitic capacitances on impedance measurements in microsensors structures: a numerical study 

      Beltrán Maturana, Nicolás; Finger Camus, Ricardo; Santiago Aviles, Jorge; Espinoza Vallejos, Patricio (ELSEVIER, 2003-11-15)
      The use of solid electrolyte cells to detect specific gases is widely applied in the electronic control systems. Ionic conduction in this type of sensors is normally studied through impedance spectroscopy, since the data ...
    • G331.512-0.103: An interstellar laboratory for molecular synthesis. I. the ortho-to-para ratios for CH3OH and CH3CN 

      Mendoza, Edgar; Bronfman Aguiló, Leonardo; Duronea, Nicolas U.; Lepine, Jacques R. D.; Finger Camus, Ricardo; Merello, Manuel; Hervias Caimapo, Carlos; Gama, Diana R. G.; Reyes, Nicolás; Ake Nyman, Lars (IOP Publishing Ltd, 2018)
      Spectral line surveys reveal rich molecular reservoirs in G331.512-0.103, a compact radio source in the center of an energetic molecular outflow. In this first work, we analyze the physical conditions of the source by means ...
    • Large-scale CO (J=4–3) mapping toward the Orion-A giant molecular cloud 

      ISHII, Shun; Seta, Masumichi; Nagai, Makoto; Miyamoto, Yusuke; Nakai, Naomasa; Nagasaki, Taketo; Arai, Hitoshi; Imada, Hiroaki; Miyagawa, Naoki; Maezawa, Hiroyuki; Maehashi, Hideki; Finger Camus, Ricardo (2015)
      We have mapped the Orion-A giant molecular cloud in the CO(J=4–3) line with the Tsukuba 30cm submillimeter telescope. The map covered a 7.125 deg2 area with a 9 resolution, including main components of the cloud such ...
    • Puesta en marcha de la etapa analógica de un interferómetro de dos antenas 

      Tapia Ugarte, Pablo Andrés (Universidad de Chile, 2013)
      La presente memoria tuvo por objetivo continuar con el desarrollo de un interferómetro de dos antenas, realizando la puesta en marcha e integración del sistema hasta la etapa analógica. Esto se realizó con el fin de efectuar ...
    • SEDIGISM: Structure, excitation, and dynamics of the inner Galactic interstellar medium 

      Schuller, F.; Csengeri, T.; Urquhart, J.S.; Duarte Cabral, A.; Barnes, P.J.; Giannetti, A.; Hernandez, A.K.; Leurini, S.; Mattern, M.; Medina, S. -N.X.; Agurto, C.; Azagra, F.; Anderson, L. D.; Beltrán, M.T.; Beuther, H.; Bontemps, S.; Bronfman Aguiló, Leonardo; Dobbs, C.L.; Dumke, M.; Finger Camus, Ricardo; Ginsburg, A.; González, E.; Henning, Thomas; Kauffmann, J.; Mac Auliffe, F.; Menten, K.M.; Montenegro Montes, F.M.; Moore, T.J.T; Muller, E.; Parra, R.; Pérez Beaupuits, J. -P.; Pettitt, A.; Russeil, D.; Sánchez Monge, A.; Schilke, P.; Schisano, E.; Suri, S.; Testi, L.; Torstensson, K.; Venegas, P.; Wang, K.; Wienen, M.; Wyrowski, F.; Zavagno, A. (EDP Sciences, 2017-05)
      Context. The origin and life-cycle of molecular clouds are still poorly constrained, despite their importance for understanding the evolution of the interstellar medium. Many large-scale surveys of the Galactic plane have ...
    • The diffuse molecular component in the nuclear bulge of the Milky Way 

      Riquelme, D.; Bronfman Aguiló, Leonardo; Mauersberger, R.; Finger Camus, Ricardo; Henkel, C.; Wilson, T. L.; Cortes Zuleta, P. (EDP Sciences, 2018)
      Context. The bulk of the molecular gas in the central molecular zone (CMZ) of the Galactic center region shows warm kinetic temperatures, ranging from > 20 K in the coldest and densest regions (n similar to 10(4-5) cm(-3)) ...
    • Ultra-pure digital sideband separation at sub-millimeter wavelengths 

      Finger Camus, Ricardo; Mena, F. P.; Baryshev, A.; Khudchenko, A.; Rodriguez, R.; Huaracan, E.; Alvear, A.; Barkhof, J.; Hesper, R.; Bronfman Aguiló, Leonardo (EDP Sciences, 2015)
      Context. Deep spectral-line surveys in the mm and sub-mm range can detect thousands of lines per band uncovering the rich chemistry of molecular clouds, star forming regions and circumstellar envelopes, among others ...