| Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 5, 2010
|
|
|---|---|---|
| Article Number | 10055 | |
| Number of page(s) | 16 | |
| DOI | https://doi.org/10.2971/jeos.2010.10055 | |
| Published online | 08 November 2010 | |
Regular papers
Synthetic modeling of astronomical closed loop adaptive optics
Leiden Observatory, Niels Bohrweg 2, NL-2333 CA Leiden, The Netherlands
* laurent.jolissaint@aquilaoptics.com
Received:
10
June
2010
We present an analytical model of a single natural guide star astronomical adaptive optics system, in closed loop mode. The model is used to simulate the long exposure system point spread function, using the spatial frequency (or Fourier) approach, and complements an initial open loop model. Applications range from system design, science case analysis and AO data reduction. All the classical phase errors have been included: deformable mirror fitting error, wavefront sensor spatial aliasing, wavefront sensor noise, and the correlated anisoplanatic and servo-lag error. The model includes the deformable mirror spatial transfer function, and the actuator array geometry can be different from the wavefront sensor lenslet array geometry. We also include the dispersion between the sensing and the correction wavelengths. Illustrative examples are given at the end of the paper.
Key words: astronomical instrumentation / adaptive optics / Fourier optics modeling / spatial frequency modeling
© The Author(s) 2010. All rights reserved.
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