Regnault, N; Guyonnet, A.; Schahmanèche, K.; Le Guillou, L; Antilogus, Pierre; Astier, Pierre; Barrelet, E.; Betoule, M.; Bongard, S; Cuillandre, Jean-Charles; Tisserand, Patrick
Aims. We describe the design, operation, and first results of a photometric calibration project, called DICE (Direct Illumination Calibration Experiment), aiming at achieving precise instrumental calibration of optical telescopes. The heart of DICE is an illumination device composed of 24 narrow-spectrum, high-intensity, light-emitting diodes (LED) chosen to cover the ultraviolet-to-near-infrared spectral range. It implements a point-like source placed at a finite distance from the telescope...[Show more]
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