Browsing by Author "Castelli, Marco"

Browsing by Author "Castelli, Marco"

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  • Castelli, Marco (Cranfield University, 2012-10)
    In this thesis, the research and development of a novel rapid figuring procedure for large ultra-precise optics by Reactive Atom Plasma technology is reported. The hypothesis proved in this research is that a metre scale ...
  • Castelli, Marco; Jourdain, Renaud; Morantz, Paul; Shore, Paul (2012-09-13)
    The next generation of ground-based astronomical observatories will require fabrication and maintenance of extremely large segmented mirrors tens of meters in diameter. At present, the large production of segments required ...
  • Jourdain, Renaud; Castelli, Marco; Shore, Paul (2010-06-01)
    Recently established the Helios 1200 (RaptTM ) is a unique facility designed for the figuring of large optical surfaces [1]. It combines a CNC machine tool with a reactive atom plasma (RAP) process. This provides a unique ...
  • Jourdain, Renaud; Castelli, Marco; Shore, Paul; Sommer, P.; Proscia, David (Springer, 2013-04-11)
    A new surface figuring machine called Helios 1200 is presented in this paper. It is designed for the figuring of meter sized optical surfaces with form accuracy correction capability better than 20 nm rms within a reduced ...