ALFA: Adaptive optics for the Calar Alto observatory optics, control systems, and performance

被引：28

作者：

Kasper, M

Looze, DP

Hippler, S

Herbst, T

Glindemann, A

Ott, T

Wirth, A

机构：

[1] Max Planck Inst Astron, D-69117 Heidelberg, Germany

[2] Univ Massachusetts, Amherst, MA 01003 USA

[3] European So Observ, D-37075 Garching, Germany

[4] Max Planck Inst Extraterr Phys, D-37075 Garching, Germany

[5] Adapt Opt Associates Inc, Cambridge, MA USA

来源：

EXPERIMENTAL ASTRONOMY | 2000年 / 10卷 / 01期

关键词：

adaptive optics; modal aliasing; modal control; wavefront sensing;

D O I：

10.1023/A:1008165402336

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The adaptive optics system ALFA differs in some aspects from systems like ADONIS and PUEO which have delivered scientific results since years. Interchangeable lenslet arrays with different numbers of subapertures and a deformable mirror with many more actuators than the number of corrected modes result in some peculiarities in the calibration of the system and the reconstruction of incident wavefronts. We describe the design of ALFA's optics and its modal control architecture with a focus on a comparative study of the performance of different mode sets used to correct the wavefront aberrations. An outlook on our plans to improve and simplify the use of ALFA is given. The last section is dedicated to issues related to observing with ALFA in its present state. Expected Strehl ratios for different seeing conditions and guide star magnitudes are summarized in a table. AO observations in general, direct imaging and doing spectroscopy with ALFA in particular are discussed.

引用

页码：49 / 73

页数：25

共 22 条

[1]

BEKER O, 1999, THESIS U MASSACHUSET

[2] STRAP for the VLT instruments [J].

Bonaccini, D ;

Gallieni, D ;

Biasi, R ;

Gori, F ;

Ghioni, M ;

Trottier, C ;

Hubin, N .

ADAPTIVE OPTICS AND APPLICATIONS, 1997, 3126 :580-588

[3] Optimal bases for wave-front simulation and reconstruction on annular apertures [J].

Cannon, RC .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1996, 13 (04) :862-867

[4] WAVE-FRONT TEMPORAL SPECTRA IN HIGH-RESOLUTION IMAGING THROUGH TURBULENCE [J].

CONAN, JM ;

ROUSSET, G ;

MADEC, PY .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1995, 12 (07) :1559-1570

[5] Modal wave-front reconstruction with zernike polynomials and Karhunen-Loeve functions [J].

Dai, GM .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1996, 13 (06) :1218-1225

[6] The ALFA laser guide star: Operation and results [J].

Davies, R ;

Eckart, A ;

Hackenberg, W ;

Ott, T ;

Butler, D ;

Kasper, M ;

Quirrenbach, A .

EXPERIMENTAL ASTRONOMY, 2000, 10 (01) :103-121

[7] CHARM: A tip-tilt tertiary system for the Calar Alto 3.5-m telescope [J].

Glindemann, A ;

McCaughrean, MJ ;

Hippler, S ;

Birk, C ;

Wagner, K ;

Rohloff, RR .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1997, 109 (736) :688-696

[8] Adaptive optics on large telescopes [J].

Glindemann, A ;

Hippler, S ;

Berkefeld, T ;

Hackenberg, W .

EXPERIMENTAL ASTRONOMY, 2000, 10 (01) :5-47

[9] ALFA: The MPIA/MPE* adaptive optics with a laser for astronomy project [J].

Hippler, S ;

Glindemann, A ;

Kasper, M ;

Kalas, P ;

Rohloff, RR ;

Wagner, K ;

Looze, DP ;

Hackenberg, W .

ADAPTIVE OPTICAL SYSTEM TECHNOLOGIES, PARTS 1 AND 2, 1998, 3353 :44-55

[10]

Lawson C.L., 1974, SOLVING LEAST SQUARE

← 1 2 3 →