Paper
19 July 2010 Narrow ion-beam figuring: a new tool to address extreme slopes on small surfaces located near telescope pupils
Ulrich Mueller, Jeff Stone, Bridget G. Peters, Jay Daniel, Thomas P. Greene, Ruslan Belikov, Olivier Guyon
Author Affiliations +
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.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ulrich Mueller, Jeff Stone, Bridget G. Peters, Jay Daniel, Thomas P. Greene, Ruslan Belikov, and Olivier Guyon "Narrow ion-beam figuring: a new tool to address extreme slopes on small surfaces located near telescope pupils", Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77390B (19 July 2010); https://doi.org/10.1117/12.857962
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Cited by 3 scholarly publications.
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KEYWORDS
Ion beams

Beam shaping

Telescopes

Ions

Spatial frequencies

Ion beam finishing

Apodization

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