### Abstract

The point spread function (PSF) for a ground-based telescope is calculated for two types of wave front correctors, i.e., deformable and segmented mirrors. The deformable mirror is assumed to be a thin square plate fixed at its center and deformed within a system of lateral forces applied to 20 points. The segmented corrector is a set of square segments with three degrees of freedom, the number of elements varies from 1 to 16. The wavefront distortions are of the Kolmogorov spectrum and are considered to be known for each random realization. It is shown that the PSF calculated for a 9 element segmented corrector (27 degrees of freedom) is close to that obtained for the deformable mirror with 20 degrees of freedom.

Original language | English |
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Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |

Editors | Mark A. Ealey, Fritz Merkle |

Pages | 768-773 |

Number of pages | 6 |

Volume | 2201 |

Publication status | Published - 1994 |

Event | Adaptive Optics in Astronomy - Kailua, HI, USA Duration: 17 Mar 1994 → 18 Mar 1994 |

### Other

Other | Adaptive Optics in Astronomy |
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City | Kailua, HI, USA |

Period | 17.3.94 → 18.3.94 |

### Fingerprint

### ASJC Scopus subject areas

- Electrical and Electronic Engineering
- Condensed Matter Physics

### Cite this

*Proceedings of SPIE - The International Society for Optical Engineering*(Vol. 2201, pp. 768-773)

**Efficiency of deformable and segmented mirrors for correction of turbulence-induced wavefront distortions.** / Lukin, Vladimir P.; Fortes, Boris V.; Kanev, Fyodor Y.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*Proceedings of SPIE - The International Society for Optical Engineering.*vol. 2201, pp. 768-773, Adaptive Optics in Astronomy, Kailua, HI, USA, 17.3.94.

}

TY - GEN

T1 - Efficiency of deformable and segmented mirrors for correction of turbulence-induced wavefront distortions

AU - Lukin, Vladimir P.

AU - Fortes, Boris V.

AU - Kanev, Fyodor Y.

PY - 1994

Y1 - 1994

N2 - The point spread function (PSF) for a ground-based telescope is calculated for two types of wave front correctors, i.e., deformable and segmented mirrors. The deformable mirror is assumed to be a thin square plate fixed at its center and deformed within a system of lateral forces applied to 20 points. The segmented corrector is a set of square segments with three degrees of freedom, the number of elements varies from 1 to 16. The wavefront distortions are of the Kolmogorov spectrum and are considered to be known for each random realization. It is shown that the PSF calculated for a 9 element segmented corrector (27 degrees of freedom) is close to that obtained for the deformable mirror with 20 degrees of freedom.

AB - The point spread function (PSF) for a ground-based telescope is calculated for two types of wave front correctors, i.e., deformable and segmented mirrors. The deformable mirror is assumed to be a thin square plate fixed at its center and deformed within a system of lateral forces applied to 20 points. The segmented corrector is a set of square segments with three degrees of freedom, the number of elements varies from 1 to 16. The wavefront distortions are of the Kolmogorov spectrum and are considered to be known for each random realization. It is shown that the PSF calculated for a 9 element segmented corrector (27 degrees of freedom) is close to that obtained for the deformable mirror with 20 degrees of freedom.

UR - http://www.scopus.com/inward/record.url?scp=0028758118&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028758118&partnerID=8YFLogxK

M3 - Conference contribution

SN - 0819414964

SN - 9780819414960

VL - 2201

SP - 768

EP - 773

BT - Proceedings of SPIE - The International Society for Optical Engineering

A2 - Ealey, Mark A.

A2 - Merkle, Fritz

ER -