Chapter 1 Active optics in modern large optical telescopes

2 Principles of active optics 2 2.1 Error sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.2 Classification of active telescopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2.1 Control loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2.2 Correction strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.3 Modal control concept and choice of set of modes . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.4 Examples of active telescopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

[1]  L. Noethe,et al.  Analytical expressions for field astigmatism in decentered two mirror telescopes and application to the collimation of the ESO VLT , 2000 .

[2]  Jeremiah F. Creedon,et al.  Control of the optical surface of a thin, deformable primary mirror with application to an orbiting astronomical observatory , 1970 .

[3]  R. Noll.  Zernike polynomials and atmospheric turbulence , 1976 .

[4]  Raymond N. Wilson,et al.  Reflecting Telescope Optics II , 1999 .

[5]  Lothar Noethe,et al.  Active optics. Pt. 4. Set-up and performance of the optics of the ESO New Technology Telescope (NTT) in the observatory. , 1991 .

[6]  A. Hall.  Applied Optics. , 2022, Science.

[7]  G Schwesinger,et al.  Nondistorting lateral edge support of large telescope mirrors. , 1994, Applied optics.

[8]  Derrick Salmon,et al.  MIRROR, DOME, AND NATURAL SEEING AT CFHT , 1991 .

[9]  Joseph J. M. Braat,et al.  Polynomial expansion of severely aberrated wave fronts , 1987 .

[10]  G. Schwesinger.  An Analytical Determination of the Flexure of the 3·5 m Primary and 1 m Test Mirror of the ESO's New Technology Telescope for Passive Support and Active Control , 1988 .

[11]  M. Troy,et al.  Phase discontinuity sensing: a method for phasing segmented mirrors in the infrared. , 1999, Applied optics.

[12]  G. Schwesinger.  Lateral Support of Very Large Telescope Mirrors by Edge Forces Only , 1991 .

[13]  Brian A. McLeod,et al.  COLLIMATION OF FAST WIDE-FIELD TELESCOPES , 1996 .

[14]  Lothar Noethe,et al.  Active Optics: I. A System for Optimizing the Optical Quality and Reducing the Costs of Large Telescopes , 1987 .

[15]  L. Noethe,et al.  Active Optics, Adaptive Optics, and Laser Guide Stars , 1993, Science.

[16]  Lothar Noethe,et al.  Use of Minimum-energy Modes for Modal-active Optics Corrections of Thin Meniscus Mirrors , 1991 .

[17]  Raymond N. Wilson.  Reflecting Telescope Optics I , 1996 .

[18]  T. Mast,et al.  Phasing the mirror segments of the Keck telescopes: the broadband phasing algorithm. , 1998, Applied optics.

[19]  Larry M. Stepp,et al.  Advanced Technology Optical/IR Telescopes VI , 1994 .

[20]  P. Dierickx.  Optical Performance of Large Ground-based Telescopes , 1992 .

[21]  L. R. Baker,et al.  Opto-Mechanical Systems Design , 1986 .

[22]  F Roddier,et al.  Wavefront reconstruction using iterative Fourier transforms. , 1991, Applied optics.