The optical alignment of the Gemini planet imager adaptive optics bench
| Autor: | Murray Fletcher, Vlad Reshetov, John Pazder, Daren Dillon, Jean Lacoursière, Brian J. Bauman |
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| Rok vydání: | 2012 |
| Předmět: |
Optical telescopes
Paraboloid Wavefronts Astronomical instrumentation Shack-Hartmann wavefront sensors law.invention Telescope Optics law Gemini Planet Imager Helium neon lasers Adaptive optics Alignment Remote sensing Wavefront Physics business.industry Wavefront sensor Laser Optical alignments Mirrors Gemini telescopes Off-axis business Fiducial marker FaroArm Telescopes |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| DOI: | 10.1117/12.925866 |
| Popis: | The Gemini Planet Imager (GPI) is a facility instrument under construction for the 8-m Gemini South telescope. This paper describes the methods used for optical alignment of the adaptive optics (AO) bench. The optical alignment of the off-axis paraboloid mirrors was done using a pre-alignment method utilizing a HeNe laser and alignment telescopes followed by a fine-tuning using a Shack-Hartmann wavefront sensor and a shear plate. A FARO arm measuring system was used to place the fiducials for the alignment. Using these methods the AO bench was aligned to 13nm RMS of wavefront error. © 2012 SPIE. Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II, July 1-6, 2012, Amsterdam, The Netherlands Series: Proceedings of SPIE; no. 8450 |
| Databáze: | OpenAIRE |
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