From Event: SPIE Optical Engineering + Applications, 2017
ATHENA (Advanced Telescope for High-ENergy Astrophysics) is the next high-energy astrophysical mission selected by the European Space Agency for launch in 2028. The X-ray telescope consists of 1062 silicon pore optics mirror modules with a target angular resolution of 5 arcsec. Each module must be integrated on a 3 m structure with an accuracy of 1.5 arcsec for alignment and assembly. This industrial and scientific team is developing the alignment and integration process of the SPO mirror modules based on ultra-violet imaging at the 12 m focal plane. This technique promises to meet the accuracy requirement while, at the same time, allowing arbitrary integration sequence and mirror module exchangeability. Moreover, it enables monitoring the telescope point spread function during the planned 3-year integration phase.
G. Valsecchi, F. Marioni, G. Bianucci, F. E. Zocchi, D. Gallieni, G. Parodi, M. Ottolini, M. Collon, M. Civitani, G. Pareschi, D. Spiga, M. Bavdaz, and E. Wille, "Optical integration of SPO mirror modules in the ATHENA telescope," Proc. SPIE 10399, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII, 103990E (Presented at SPIE Optical Engineering + Applications: August 08, 2017; Published: 29 August 2017); https://doi.org/10.1117/12.2272997.
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Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon