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Proceedings Paper

Narrow ion-beam figuring: a new tool to address extreme slopes on small surfaces located near telescope pupils
Author(s): Ulrich Mueller; Jeff Stone; Bridget G. Peters; Jay Daniel; Thomas P. Greene; Ruslan Belikov; Olivier Guyon
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Paper Abstract

Advanced shapes can now be produced for the corrective optics placed near a reimaged pupil, or even a deformable mirror surface. These surfaces can be improved and even apodization added to improve contrast. In this paper, we describe a special form of Narrow Ion Beam Figuring (NIBF) developed at L-3 Tinsley. In contrast to existing Ion Beam Figuring (IBF) machining schemes, the FWHM beam width is controlled in a much narrower band while still providing high beam currents.

Paper Details

Date Published: 19 July 2010
PDF: 7 pages
Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77390B (19 July 2010); doi: 10.1117/12.857962
Show Author Affiliations
Ulrich Mueller, L-3 Communications Tinsley Labs. Inc. (United States)
Jeff Stone, L-3 Communications Tinsley Labs. Inc. (United States)
Bridget G. Peters, L-3 Communications Tinsley Labs. Inc. (United States)
Jay Daniel, L-3 Communications Tinsley Labs. Inc. (United States)
Thomas P. Greene, NASA Ames Research Ctr. (United States)
Ruslan Belikov, NASA Ames Research Ctr. (United States)
Olivier Guyon, Subaru Telescope, National Astronomical Observatory of Japan (United States)


Published in SPIE Proceedings Vol. 7739:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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