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Autor Sánchez de Miguel, Alejandro |
Documentos disponibles escritos por este autor (42)
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Sánchez de Miguel, Alejandro ; Bará, Salvador ; Aubé, Martin ; Cardiel López, Nicolás | MDPI | 2019-04Night-time lights interact with human physiology through different pathways starting at the retinal layers of the eye; from the signals provided by the rods; the S-, L- and M-cones; and the intrinsically photosensitive retinal ganglion cells (ip[...]texto impreso
Sánchez de Miguel, Alejandro ; Zamorano Calvo, Jaime ; Gómez Castaño, José ; Pascual Ramírez, Sergio | Pergamon-Elsevier Science Ltd. | 2014-05We present the results of the analysis of satellite imagery to study light pollution in Spain. Both calibrated and non-calibrated DMSP-OLS images were used. We describe the method to scale the non-calibrated DMSP-OLS images which allows us to us[...]texto impreso
Presentación de programa de formacion de ASAAF utilizando el proyecto PARTNeR.texto impreso
Kyba, Christopher C. M. ; Garz, Stefanie ; Kuechly, Helga ; Sánchez de Miguel, Alejandro ; Zamorano Calvo, Jaime ; Fischer, Jüergen ; Höelker, Franz | MDPI AG | 2015-01Images of the Earth at night are an exceptional source of human geographical data, because artificial light highlights human activity in a way that daytime scenes do not. The quality of such imagery dramatically improved in 2012 with two new spa[...]texto impreso
La iluminación LED es el futuro de la iluminación. Sin embargo, como toda tecnología, puede usarse de manera correcta o incorrecta. En el caso de los LED, el abaratamiento de la producción de luz podría provocar un aumento descontrolado de la Co[...]texto impreso
Sánchez de Miguel, Alejandro ; Zamorano Calvo, Jaime ; Gómez Castaño, José | 2014-02-16Right now there are around 1.800.000 images at the Johnson Space Center database (The Gateway of the Astronauts) and around of 1.200.000 images came from the ISS (date 20/02/2014). Although, the classified images are a number much smaller and th[...]texto impreso
Zamorano Calvo, Jaime ; Sánchez de Miguel, Alejandro ; Pascual Ramírez, Sergio ; Gómez Castaño, José ; Ramírez Moreta, Pablo ; Challupner, Peter | Laboratorio de Investigación Científica Avanzada (LICA) | 2011-05-04The potential of the night pictures taken from the International Space Station (ISS) with a Nikon D3s digital camera to fight against light pollution is shown. A scientific analysis of ISS026-E-26493 RAW image of Madrid at night with techniques [...]texto impreso
Sánchez de Miguel, Alejandro ; Zamorano Calvo, Jaime ; Pascual Ramírez, Sergio ; López Cayuela, Marian ; Ocaña González, Francisco ; Challupner, Peter ; Fernández-Renau, A. ; Gómez, J.A. | 2012-08-29The potential of the pictures of the Earth taken at night from the International Space Station (ISS) with a Nikon D3s digital camera to fight against light pollution is shown. We show that RAW pictures should be used to obtain fluxes. We have de[...]texto impreso
Tapia Ayuga, Carlos ; Sánchez de Miguel, Alejandro ; Zamorano Calvo, Jaime | Grupo UCM de Astrofísica Extragaláctica e Instrumentación Astronómica | 2015Spectra of the lamps that are used for public lighting and ornamental purposes have been obtained with a portable spectrograph around Madrid city. The database is presented in this report along with a description of the procedures. The database [...]texto impreso
Tapia Ayuga, Carlos ; Sánchez de Miguel, Alejandro ; Zamorano Calvo, Jaime | Grupo UCM de Astrofísica Extragaláctica e Instrumentación Astronómica | 2017-01Spectra of the lamps that are used for public lighting and ornamental purposes have been obtained with a portable spectrograph around Madrid city. The database is presented in this report along with a description of the procedures. The database [...]texto impreso
Using DMPS satellite night images taken in 2000 we have estimated the saturated surface in many European countries. The objective of this study is to compare the illumination conditions and its effects in light pollution. We have measured the su[...]texto impreso
Zamorano Calvo, Jaime ; Sánchez de Miguel, Alejandro ; Nievas Rosillo, Mireia ; Tapia Ayuga, Carlos ; Ocaña González, Francisco ; Izquierdo Gómez, Jaime ; Gallego Maestro, Jesús ; Pascual Ramírez, Sergio | 2015-07-15The SQM network of the Spanish Light Pollution Research collaboration (http://guaix.fis.ucm.es/splpr/SQM-REECL) is growing with the help of amateur astronomers and interested citizens. Up to now there are 18 stations. SQM photometers provide mea[...]texto impreso
Zamorano Calvo, Jaime ; Sánchez de Miguel, Alejandro ; Gómez Castaño, José ; Ocaña González, Francisco ; Gallego Maestro, Jesús ; Pila Díez, Berenice ; Nievas Rosillo, Mireia ; Tapia Ayuga, Carlos ; Fernández Domínguez, Alberto ; Pascual Ramírez, Sergio | 2013-04-15Preliminary results of a study of the night sky background brightness around the city of Madrid using Sky Quality Meter (SQM) photometers are presented. Data-retrieval methodology includes an automatic procedure to measure from a moving vehicle [...]texto impreso
Zamorano Calvo, Jaime ; Sánchez de Miguel, Alejandro ; Nievas Rosillo, Mireia ; Tapia Ayuga, Carlos | 2014-10-02The NixNox procedure to build all-sky maps of the nocturnal night sky brightness using SQM photometers is described. Astronomers belonging to amateur associations in Spain are using this observational method to obtain data of their preferred sit[...]texto impreso
Zamorano Calvo, Jaime ; Izquierdo, Jaime ; Sánchez de Miguel, Alejandro ; Ocaña, Francisco | Wiley | 2014-12-11We have analysed the meteor activity associated with meteoroids of fresh dust trails of Comet 209P/LINEAR, which produced an outburst of the Camelopardalid meteor shower (IAU code #451, CAM) in 2014 May. With this aim, we have employed an array [...]