Abstract

The deformation accuracy of the stressed lap is crucial to the fit between the lap and mirror in the production of large aspherics with stressed lap technology. As a preliminary work, we analyze a prototype model with the assistance of finite element analysis tools and build it out based on the analysis results in order to verify the accuracy of the deformation. Test results show that both the high-order residual error and repeatability of deformation of the lap are within 1μm rms in an 80% diameter of the lap for common deformations, faithfully meeting the accuracy requirement in the polishing process.

© 2011 Optical Society of America

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  1. H. Martin, D. Anderson, J. R. P. Angel, R. H. Nagel, S. C. West, and R. S. Young, “Progress in the stressed-lap polishing of a 1.8 mf/1 mirror,” Proc. SPIE 1236, 682–690 (1990).
    [CrossRef]
  2. D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
    [CrossRef]
  3. D. Anderson, H. Martin, and J. Burge, D. A. Ketelsen, and S. C. West, “Rapid fabrication strategies for primary and secondary mirrors at Steward Observatory Mirror Laboratory,” Proc. SPIE 2199, 199–210 (1994).
    [CrossRef]
  4. H. M. Martin, R. G. Allen, and J. H. Burge, “Polishing of a 6.5 mf/1.25 mirror for the first Magellan telescope,” Proc. SPIE 3739, 47–55 (1999).
    [CrossRef]
  5. H. M. Martin, J. H. Burge, B. Cuerden, W. B. Davison, J. S. Kingsley, R. D. Lutz, S. M. Miller, and M. Tuell, “Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope,” Proc. SPIE 7018, 70180G (2008).
    [CrossRef]
  6. H. M. Martin, R. G. Allen, J. H. Burge, D. W. Kim, J. S. Kingsley, M. T. Tuell, S. C. West, C. Zhao, and T. Zobrist, “Fabrication and testing of the first 8.4 m off-axis segment for the Giant Magellan Telescope,” Proc. SPIE 7709, 77390A (2010).
    [CrossRef]
  7. S. C. West, H. M. Martin, R. H. Nagel, R. S. Young, W. B. Davison, T. J. Trebisky, S. T. DeRigne, and B. B. Hille, “Practical design and performance of the stressed lap polishing tool,” Appl. Opt. 33, 8094–8100 (1994).
    [CrossRef]
  8. R. N. Wilson, Reflecting Telescope Optics II (Springer, 2001).
  9. J. Lubliner and J. E. Nelson, “Stressed mirror polishing 1: a technology for producing nonaxisymmetric mirror,” Appl. Opt. 19, 2332–2340 (1980).
    [CrossRef]
  10. J. E. Nelson, G. Gabor, L. K. Hunt, J. Lubliner, and T. S. Mast, “Stressed mirror polishing 2: fabrication of an off-axis section of a paraboloid,” Appl. Opt. 19, 2341–2352 (1980).
    [CrossRef]
  11. T. S. Mast and J. E. Nelson, “Keck Telescope Primary Segments: fabrication and support,” in Proceedings of the ESO Conference on Very Large Telescopes and Their Instrumentation (European Southern Observatory, 1988), Vol.  1, pp. 411–420.
  12. J. W. Pepi, “Test and theoretical comparisons for bending and springing of the Keck segmented ten meter telescope,” Proc. SPIE 1271, 275–287 (1990).
    [CrossRef]
  13. A. Y. S. Cheng, “Design aspects of future very large telescopes,” Ph.D. dissertation (University of Arizona, 1987).

2010

H. M. Martin, R. G. Allen, J. H. Burge, D. W. Kim, J. S. Kingsley, M. T. Tuell, S. C. West, C. Zhao, and T. Zobrist, “Fabrication and testing of the first 8.4 m off-axis segment for the Giant Magellan Telescope,” Proc. SPIE 7709, 77390A (2010).
[CrossRef]

2008

H. M. Martin, J. H. Burge, B. Cuerden, W. B. Davison, J. S. Kingsley, R. D. Lutz, S. M. Miller, and M. Tuell, “Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope,” Proc. SPIE 7018, 70180G (2008).
[CrossRef]

1999

H. M. Martin, R. G. Allen, and J. H. Burge, “Polishing of a 6.5 mf/1.25 mirror for the first Magellan telescope,” Proc. SPIE 3739, 47–55 (1999).
[CrossRef]

1994

D. Anderson, H. Martin, and J. Burge, D. A. Ketelsen, and S. C. West, “Rapid fabrication strategies for primary and secondary mirrors at Steward Observatory Mirror Laboratory,” Proc. SPIE 2199, 199–210 (1994).
[CrossRef]

S. C. West, H. M. Martin, R. H. Nagel, R. S. Young, W. B. Davison, T. J. Trebisky, S. T. DeRigne, and B. B. Hille, “Practical design and performance of the stressed lap polishing tool,” Appl. Opt. 33, 8094–8100 (1994).
[CrossRef]

1992

D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
[CrossRef]

1990

H. Martin, D. Anderson, J. R. P. Angel, R. H. Nagel, S. C. West, and R. S. Young, “Progress in the stressed-lap polishing of a 1.8 mf/1 mirror,” Proc. SPIE 1236, 682–690 (1990).
[CrossRef]

J. W. Pepi, “Test and theoretical comparisons for bending and springing of the Keck segmented ten meter telescope,” Proc. SPIE 1271, 275–287 (1990).
[CrossRef]

1980

Allen, R. G.

H. M. Martin, R. G. Allen, J. H. Burge, D. W. Kim, J. S. Kingsley, M. T. Tuell, S. C. West, C. Zhao, and T. Zobrist, “Fabrication and testing of the first 8.4 m off-axis segment for the Giant Magellan Telescope,” Proc. SPIE 7709, 77390A (2010).
[CrossRef]

H. M. Martin, R. G. Allen, and J. H. Burge, “Polishing of a 6.5 mf/1.25 mirror for the first Magellan telescope,” Proc. SPIE 3739, 47–55 (1999).
[CrossRef]

Anderson, D.

D. Anderson, H. Martin, and J. Burge, D. A. Ketelsen, and S. C. West, “Rapid fabrication strategies for primary and secondary mirrors at Steward Observatory Mirror Laboratory,” Proc. SPIE 2199, 199–210 (1994).
[CrossRef]

H. Martin, D. Anderson, J. R. P. Angel, R. H. Nagel, S. C. West, and R. S. Young, “Progress in the stressed-lap polishing of a 1.8 mf/1 mirror,” Proc. SPIE 1236, 682–690 (1990).
[CrossRef]

Anderson, D. S.

D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
[CrossRef]

Angel, J. R. P.

D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
[CrossRef]

H. Martin, D. Anderson, J. R. P. Angel, R. H. Nagel, S. C. West, and R. S. Young, “Progress in the stressed-lap polishing of a 1.8 mf/1 mirror,” Proc. SPIE 1236, 682–690 (1990).
[CrossRef]

Burge, J.

D. Anderson, H. Martin, and J. Burge, D. A. Ketelsen, and S. C. West, “Rapid fabrication strategies for primary and secondary mirrors at Steward Observatory Mirror Laboratory,” Proc. SPIE 2199, 199–210 (1994).
[CrossRef]

D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
[CrossRef]

Burge, J. H.

H. M. Martin, R. G. Allen, J. H. Burge, D. W. Kim, J. S. Kingsley, M. T. Tuell, S. C. West, C. Zhao, and T. Zobrist, “Fabrication and testing of the first 8.4 m off-axis segment for the Giant Magellan Telescope,” Proc. SPIE 7709, 77390A (2010).
[CrossRef]

H. M. Martin, J. H. Burge, B. Cuerden, W. B. Davison, J. S. Kingsley, R. D. Lutz, S. M. Miller, and M. Tuell, “Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope,” Proc. SPIE 7018, 70180G (2008).
[CrossRef]

H. M. Martin, R. G. Allen, and J. H. Burge, “Polishing of a 6.5 mf/1.25 mirror for the first Magellan telescope,” Proc. SPIE 3739, 47–55 (1999).
[CrossRef]

Cheng, A. Y. S.

A. Y. S. Cheng, “Design aspects of future very large telescopes,” Ph.D. dissertation (University of Arizona, 1987).

Cuerden, B.

H. M. Martin, J. H. Burge, B. Cuerden, W. B. Davison, J. S. Kingsley, R. D. Lutz, S. M. Miller, and M. Tuell, “Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope,” Proc. SPIE 7018, 70180G (2008).
[CrossRef]

Davison, W. B.

H. M. Martin, J. H. Burge, B. Cuerden, W. B. Davison, J. S. Kingsley, R. D. Lutz, S. M. Miller, and M. Tuell, “Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope,” Proc. SPIE 7018, 70180G (2008).
[CrossRef]

S. C. West, H. M. Martin, R. H. Nagel, R. S. Young, W. B. Davison, T. J. Trebisky, S. T. DeRigne, and B. B. Hille, “Practical design and performance of the stressed lap polishing tool,” Appl. Opt. 33, 8094–8100 (1994).
[CrossRef]

D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
[CrossRef]

DeRigne, S. T.

S. C. West, H. M. Martin, R. H. Nagel, R. S. Young, W. B. Davison, T. J. Trebisky, S. T. DeRigne, and B. B. Hille, “Practical design and performance of the stressed lap polishing tool,” Appl. Opt. 33, 8094–8100 (1994).
[CrossRef]

D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
[CrossRef]

E., J.

T. S. Mast and J. E. Nelson, “Keck Telescope Primary Segments: fabrication and support,” in Proceedings of the ESO Conference on Very Large Telescopes and Their Instrumentation (European Southern Observatory, 1988), Vol.  1, pp. 411–420.

Gabor, G. K.

Hille, B. B.

S. C. West, H. M. Martin, R. H. Nagel, R. S. Young, W. B. Davison, T. J. Trebisky, S. T. DeRigne, and B. B. Hille, “Practical design and performance of the stressed lap polishing tool,” Appl. Opt. 33, 8094–8100 (1994).
[CrossRef]

D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
[CrossRef]

Ketelsen, D. A.

D. Anderson, H. Martin, and J. Burge, D. A. Ketelsen, and S. C. West, “Rapid fabrication strategies for primary and secondary mirrors at Steward Observatory Mirror Laboratory,” Proc. SPIE 2199, 199–210 (1994).
[CrossRef]

D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
[CrossRef]

Kim, D. W.

H. M. Martin, R. G. Allen, J. H. Burge, D. W. Kim, J. S. Kingsley, M. T. Tuell, S. C. West, C. Zhao, and T. Zobrist, “Fabrication and testing of the first 8.4 m off-axis segment for the Giant Magellan Telescope,” Proc. SPIE 7709, 77390A (2010).
[CrossRef]

Kingsley, J. S.

H. M. Martin, R. G. Allen, J. H. Burge, D. W. Kim, J. S. Kingsley, M. T. Tuell, S. C. West, C. Zhao, and T. Zobrist, “Fabrication and testing of the first 8.4 m off-axis segment for the Giant Magellan Telescope,” Proc. SPIE 7709, 77390A (2010).
[CrossRef]

H. M. Martin, J. H. Burge, B. Cuerden, W. B. Davison, J. S. Kingsley, R. D. Lutz, S. M. Miller, and M. Tuell, “Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope,” Proc. SPIE 7018, 70180G (2008).
[CrossRef]

Kittrell, W. C.

D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
[CrossRef]

Lubliner, J.

Lutz, R. D.

H. M. Martin, J. H. Burge, B. Cuerden, W. B. Davison, J. S. Kingsley, R. D. Lutz, S. M. Miller, and M. Tuell, “Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope,” Proc. SPIE 7018, 70180G (2008).
[CrossRef]

Martin, H.

D. Anderson, H. Martin, and J. Burge, D. A. Ketelsen, and S. C. West, “Rapid fabrication strategies for primary and secondary mirrors at Steward Observatory Mirror Laboratory,” Proc. SPIE 2199, 199–210 (1994).
[CrossRef]

H. Martin, D. Anderson, J. R. P. Angel, R. H. Nagel, S. C. West, and R. S. Young, “Progress in the stressed-lap polishing of a 1.8 mf/1 mirror,” Proc. SPIE 1236, 682–690 (1990).
[CrossRef]

Martin, H. M.

H. M. Martin, R. G. Allen, J. H. Burge, D. W. Kim, J. S. Kingsley, M. T. Tuell, S. C. West, C. Zhao, and T. Zobrist, “Fabrication and testing of the first 8.4 m off-axis segment for the Giant Magellan Telescope,” Proc. SPIE 7709, 77390A (2010).
[CrossRef]

H. M. Martin, J. H. Burge, B. Cuerden, W. B. Davison, J. S. Kingsley, R. D. Lutz, S. M. Miller, and M. Tuell, “Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope,” Proc. SPIE 7018, 70180G (2008).
[CrossRef]

H. M. Martin, R. G. Allen, and J. H. Burge, “Polishing of a 6.5 mf/1.25 mirror for the first Magellan telescope,” Proc. SPIE 3739, 47–55 (1999).
[CrossRef]

S. C. West, H. M. Martin, R. H. Nagel, R. S. Young, W. B. Davison, T. J. Trebisky, S. T. DeRigne, and B. B. Hille, “Practical design and performance of the stressed lap polishing tool,” Appl. Opt. 33, 8094–8100 (1994).
[CrossRef]

D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
[CrossRef]

Mast, T. S.

J. E. Nelson, G. Gabor, L. K. Hunt, J. Lubliner, and T. S. Mast, “Stressed mirror polishing 2: fabrication of an off-axis section of a paraboloid,” Appl. Opt. 19, 2341–2352 (1980).
[CrossRef]

T. S. Mast and J. E. Nelson, “Keck Telescope Primary Segments: fabrication and support,” in Proceedings of the ESO Conference on Very Large Telescopes and Their Instrumentation (European Southern Observatory, 1988), Vol.  1, pp. 411–420.

Miller, S. M.

H. M. Martin, J. H. Burge, B. Cuerden, W. B. Davison, J. S. Kingsley, R. D. Lutz, S. M. Miller, and M. Tuell, “Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope,” Proc. SPIE 7018, 70180G (2008).
[CrossRef]

Nagel, R. H.

S. C. West, H. M. Martin, R. H. Nagel, R. S. Young, W. B. Davison, T. J. Trebisky, S. T. DeRigne, and B. B. Hille, “Practical design and performance of the stressed lap polishing tool,” Appl. Opt. 33, 8094–8100 (1994).
[CrossRef]

D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
[CrossRef]

H. Martin, D. Anderson, J. R. P. Angel, R. H. Nagel, S. C. West, and R. S. Young, “Progress in the stressed-lap polishing of a 1.8 mf/1 mirror,” Proc. SPIE 1236, 682–690 (1990).
[CrossRef]

Nelson, J. E.

Pepi, J. W.

J. W. Pepi, “Test and theoretical comparisons for bending and springing of the Keck segmented ten meter telescope,” Proc. SPIE 1271, 275–287 (1990).
[CrossRef]

Trebisky, T. J.

S. C. West, H. M. Martin, R. H. Nagel, R. S. Young, W. B. Davison, T. J. Trebisky, S. T. DeRigne, and B. B. Hille, “Practical design and performance of the stressed lap polishing tool,” Appl. Opt. 33, 8094–8100 (1994).
[CrossRef]

D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
[CrossRef]

Tuell, M.

H. M. Martin, J. H. Burge, B. Cuerden, W. B. Davison, J. S. Kingsley, R. D. Lutz, S. M. Miller, and M. Tuell, “Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope,” Proc. SPIE 7018, 70180G (2008).
[CrossRef]

Tuell, M. T.

H. M. Martin, R. G. Allen, J. H. Burge, D. W. Kim, J. S. Kingsley, M. T. Tuell, S. C. West, C. Zhao, and T. Zobrist, “Fabrication and testing of the first 8.4 m off-axis segment for the Giant Magellan Telescope,” Proc. SPIE 7709, 77390A (2010).
[CrossRef]

West, S. C.

H. M. Martin, R. G. Allen, J. H. Burge, D. W. Kim, J. S. Kingsley, M. T. Tuell, S. C. West, C. Zhao, and T. Zobrist, “Fabrication and testing of the first 8.4 m off-axis segment for the Giant Magellan Telescope,” Proc. SPIE 7709, 77390A (2010).
[CrossRef]

D. Anderson, H. Martin, and J. Burge, D. A. Ketelsen, and S. C. West, “Rapid fabrication strategies for primary and secondary mirrors at Steward Observatory Mirror Laboratory,” Proc. SPIE 2199, 199–210 (1994).
[CrossRef]

S. C. West, H. M. Martin, R. H. Nagel, R. S. Young, W. B. Davison, T. J. Trebisky, S. T. DeRigne, and B. B. Hille, “Practical design and performance of the stressed lap polishing tool,” Appl. Opt. 33, 8094–8100 (1994).
[CrossRef]

D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
[CrossRef]

H. Martin, D. Anderson, J. R. P. Angel, R. H. Nagel, S. C. West, and R. S. Young, “Progress in the stressed-lap polishing of a 1.8 mf/1 mirror,” Proc. SPIE 1236, 682–690 (1990).
[CrossRef]

Wilson, R. N.

R. N. Wilson, Reflecting Telescope Optics II (Springer, 2001).

Young, R. S.

S. C. West, H. M. Martin, R. H. Nagel, R. S. Young, W. B. Davison, T. J. Trebisky, S. T. DeRigne, and B. B. Hille, “Practical design and performance of the stressed lap polishing tool,” Appl. Opt. 33, 8094–8100 (1994).
[CrossRef]

D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
[CrossRef]

H. Martin, D. Anderson, J. R. P. Angel, R. H. Nagel, S. C. West, and R. S. Young, “Progress in the stressed-lap polishing of a 1.8 mf/1 mirror,” Proc. SPIE 1236, 682–690 (1990).
[CrossRef]

Zhao, C.

H. M. Martin, R. G. Allen, J. H. Burge, D. W. Kim, J. S. Kingsley, M. T. Tuell, S. C. West, C. Zhao, and T. Zobrist, “Fabrication and testing of the first 8.4 m off-axis segment for the Giant Magellan Telescope,” Proc. SPIE 7709, 77390A (2010).
[CrossRef]

Zobrist, T.

H. M. Martin, R. G. Allen, J. H. Burge, D. W. Kim, J. S. Kingsley, M. T. Tuell, S. C. West, C. Zhao, and T. Zobrist, “Fabrication and testing of the first 8.4 m off-axis segment for the Giant Magellan Telescope,” Proc. SPIE 7709, 77390A (2010).
[CrossRef]

Appl. Opt.

Proc. SPIE

H. Martin, D. Anderson, J. R. P. Angel, R. H. Nagel, S. C. West, and R. S. Young, “Progress in the stressed-lap polishing of a 1.8 mf/1 mirror,” Proc. SPIE 1236, 682–690 (1990).
[CrossRef]

D. S. Anderson, J. R. P. Angel, J. Burge, W. B. Davison, S. T. DeRigne, B. B. Hille, D. A. Ketelsen, W. C. Kittrell, H. M. Martin, R. H. Nagel, T. J. Trebisky, S. C. West, and R. S. Young, “Stressed-lap polishing of 3.5 mf/1.5 and 1.8 mf/1.0 mirrors,” Proc. SPIE 1531, 260–269 (1992).
[CrossRef]

D. Anderson, H. Martin, and J. Burge, D. A. Ketelsen, and S. C. West, “Rapid fabrication strategies for primary and secondary mirrors at Steward Observatory Mirror Laboratory,” Proc. SPIE 2199, 199–210 (1994).
[CrossRef]

H. M. Martin, R. G. Allen, and J. H. Burge, “Polishing of a 6.5 mf/1.25 mirror for the first Magellan telescope,” Proc. SPIE 3739, 47–55 (1999).
[CrossRef]

H. M. Martin, J. H. Burge, B. Cuerden, W. B. Davison, J. S. Kingsley, R. D. Lutz, S. M. Miller, and M. Tuell, “Manufacture of a combined primary and tertiary mirror for the Large Synoptic Survey Telescope,” Proc. SPIE 7018, 70180G (2008).
[CrossRef]

H. M. Martin, R. G. Allen, J. H. Burge, D. W. Kim, J. S. Kingsley, M. T. Tuell, S. C. West, C. Zhao, and T. Zobrist, “Fabrication and testing of the first 8.4 m off-axis segment for the Giant Magellan Telescope,” Proc. SPIE 7709, 77390A (2010).
[CrossRef]

J. W. Pepi, “Test and theoretical comparisons for bending and springing of the Keck segmented ten meter telescope,” Proc. SPIE 1271, 275–287 (1990).
[CrossRef]

Other

A. Y. S. Cheng, “Design aspects of future very large telescopes,” Ph.D. dissertation (University of Arizona, 1987).

T. S. Mast and J. E. Nelson, “Keck Telescope Primary Segments: fabrication and support,” in Proceedings of the ESO Conference on Very Large Telescopes and Their Instrumentation (European Southern Observatory, 1988), Vol.  1, pp. 411–420.

R. N. Wilson, Reflecting Telescope Optics II (Springer, 2001).

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Figures (11)

Fig. 1
Fig. 1

Tubes are arranged in groups of three attached to the perimeter of the disk, and the bending moments, M b , and twisting moments, M t , are applied by the resultant force of the three internal forces on top of those tubes.

Fig. 2
Fig. 2

Types of resultant forces needed to deflect a plane into the three basic low-order deflections; arrows indicate the resultant forces of internal forces on top of those tubes.

Fig. 3
Fig. 3

(a) Simple plate model, (b) solid element model of the lap, and (c) distribution of the Z component of the stressed lap deformation with the load case showing in the middle.

Fig. 4
Fig. 4

Error in different diameters of the lap with a deflection of 100 μm PV power based on data from the simple FEA model.

Fig. 5
Fig. 5

Error in different diameters of the lap with a deflection of 100 μm PV power based on the detailed solid element FEA model.

Fig. 6
Fig. 6

Four physical feasible configurations of the footprints of the force tubes on the lap analyzed by the FEA model.

Fig. 7
Fig. 7

Mechanical structure of the prototype model.

Fig. 8
Fig. 8

Photo of the stressed lap on an on-site CMM for metrology.

Fig. 9
Fig. 9

Residual error for 200 μm PV astigmatism in 300 mm diameter of the lap and for 400 μm PV astigmatism in the full diameter of the lap.

Fig. 10
Fig. 10

Root mean square results of the test on the deflection accuracy of the stressed lap.

Fig. 11
Fig. 11

Root mean square results of the stressed lap’s test of repeatability on forces with preload and without preload.

Tables (1)

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Table 1 Errors of the Stressed Lap in 80% Diameter of the Lap with Three Basic Deflections

Equations (1)

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S ( x , y ) = i = 1 12 A i ( x , y ) M i ,

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