Carte du ciel skychart3/3/2023 The Compton double event efficiency, as well bi-dimensional double event distribution maps and the corresponding polarimetric modulation factor will be presented and discussed. In order to predict the polarimetric performance and to optimise the design and concept of the CIPHER detection plane, a Monte Carlo code based on GEANT4 library modules was developed to simulate the detector behaviour under a polarised photon flux. This detector, due to its intrinsic geometry, can allow efficient polarimetric measurements to be made between 100 keV and 1 MeV. The polarimetric performance and design optimisation of the CIPHER detection surface have been studied by use of a Monte Carlo code. This instrument is based on a thick (10 mm) CdTe position-sensitive spectrometer comprising four modules of 32 × 32 individual pixels, each with a surface area of 2 × 2 mm2 (about 160 cm2 total detection area). In order to perform efficient polarimetric measurements for hard X-ray and soft gamma-ray sources, with an instrument of relatively robust and simple design, a CdTe based telescope (CIPHER: Coded Imager and Polarimeter for High Energy Radiation) is under study. the COMPTEL instrument on the Compton Gamma-ray Observatory and the IBIS instrument on INTEGRAL), polarimetry itself plays a secondary role in the mission objectives, as the efficiencies (0.5% and 10% maximum, respectively) and polarimetric Q factors (0.1 and 0.3, respectively) are relatively limited. Indeed for those few instruments that are capable of performing this type of measurement (e.g. Till date, polarimetry in astrophysics–in the energy domain from hard X-rays up to soft γ-rays–has not been pursued due to the difficulties involved in obtaining sufficient sensitivity. Para los que son usuarios es recomendable su descarga y para los que no lo conocéis os animo a descargarlo e instalarlo.The polarisation of astrophysical source emission in the energy range from a few tens of keV up to the MeV region is an almost unexplored field of high-energy astrophysics. * Draw a small circle to indicate the search result.Įn el primer enlace podemos descargar también el catálogo UCAC3 que se encuentra dividido en tres trozos (norte, ecuador y sur) para facilitar su descarga. * On Mac OS X the user setting directory change from ~/.skychart to ~/Library/Application Support/skychart * Right click on many button to directly access the corresponding setup form. * Possibility to make DSO not filled in graphic mode. * Allow to change bitmap stars image in photographic mode. * More command line options to allow automation from simple script. * Integrated ASCOM Interface, can be used on Windows 圆4. * Native 64 bit version for Linux and Windows It also include the following change since the previous beta version: Los cambios con respecto a versiones anteriores:Īs a stabilization version it not include many new function but focus on fixing the bugs.Ībout 140 issues where solved in this version. Ha salido la última versión estable de The Skychart (Cartes du Ciel) la 3.2Įs un software libre planetario que vale para Windows 32 y 64 bits, para linux 32 y 64bits y para mac i386, que no tiene mucho que envidiar a otros comerciales y además viene en bastantes idiomas: entre ellos el Catalán y el Español. Copio textualmente de otro foro, Gracias Jesús.
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