Figure 4 - uploaded by Truswin Raksasataya
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21: Orion and Trapazium, imaged by Laurent Koechlin with 50mm FD 2.0, exposure time: 5 minutes, Ektachrome 400 ASA. This image is here to show where the trapezium is located with regard to Orion constellation: in the middle of the M42 nebula; at the center of the field, which covers 20 • × 30 • approximately.
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L'imageur de Fresnel est un instrument focalisation diffractive qui est développé pour l'observation astrophysique depuis l'espace. Il est a longue focale, et de ce fait requiert le vol en formation. Pendant ma thèse, le concept a été étudié avec des prototypes au sol et validé en mesurant la qualité des images obtenues et les fonctionnalités de l'...
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