2021-04-122010-07-280277786X1996756XWOS;000285506400126http://hdl.handle.net/10784/27969A LED based illumination system in which five Galilean collimation systems have been used is reported on. It is part of a turbulence simulator for the evaluation of on ground telescopes instrumentation developed by INTA (optics) and LIDAX (opto-mechanics) for the IAC called IACATS. The illumination requirements (some visible and infrared lines) allow the use of five different LEDs (red, green, blue and two infrareds). In order to optimize the illumination level of each wavelength, a Galilean collimating optical configuration was constructed for each wavelength channel. The IACATS instrument simulates a scene consisting of a set of different binary stars simulating the required angular separation between them, ant their spectral characteristics. As a result, a visible and infrared multi-spectral illumination system has been integrated as a part of the turbulence simulator, and the features (opto-mechanical) and illumination characteristics are described in the following lines. ©2010 SPIE'.enghttps://v2.sherpa.ac.uk/id/publication/issn/0277-786Xinfo:eu-repo/semantics/conferencePaperAngular separationBinary starCollimation systemConcept-basedGalilean collimatorsGround telescopesIllumination levelsIllumination sourcesIllumination systemInfrared lineMulti-spectralOptical configurationsOpto-mechanicsOptomechanicalSpectral characteristicsWavelength channelsAtmospheric thermodynamicsLightningOptical collimatorsOptical telescopesAtmospheric turbulence2021-04-12Gonzalo, R.Z.Tomás, B.D.Carmen, P.S.René, R.G.Concepción, G.A.Hugo, L.H.Antonio, A.C.Javier, M.R.Heribert, A.Javier, S.10.1117/12.857985