Abstract

High-resolution imaging can be dramatically improved by combining a fast image stabilization system and variable aperture masking. We describe an imaging system that provides high-resolution images through an annular aperture using the unwanted low spatial frequency light for image stabilization. The annulus thickness and diameter can be selected to enhance the contribution of different spatial frequencies in the image at the expense of image exposure time.

© 2002 Optical Society of America

Full Article  |  PDF Article
Related Articles
Diffraction-limited imaging with partially redundant masks. I. Infrared imaging of bright objects

Christopher A. Haniff and David F. Buscher
J. Opt. Soc. Am. A 9(2) 203-218 (1992)

Image reconstruction by means of wave-front sensor measurements in closed-loop adaptive-optics systems

Michael C. Roggemann and Joseph A. Meinhardt
J. Opt. Soc. Am. A 10(9) 1996-2007 (1993)

Imaging with Fresnel zone pupil masks: extended depth of field

Guy Indebetouw and Hanxian Bai
Appl. Opt. 23(23) 4299-4302 (1984)

References

  • View by:
  • |
  • |
  • |

  1. See for example, R.R. Shannon, The art and science of optical design (Cambridge University Press, New York,1997).
  2. J.T. Baker, R. Dymale, R.A. Carreras, and S. Restaino, “Design and implementation of a low-cost starlight optical tracker system with 500 Hz active tip tilt control,” Computers and Electrical Engineering,  24(3-4), 123–133, (1998).
    [Crossref]
  3. S.R. Restaino, R.R. Radick, G.C. Loos, and R.W. Conley, “A Validation of Interferometric Imaging from a Pupil Masking Experiment on a Solar Telescope,” Appl. Opt. 33, 19, 4143 (1994).
    [Crossref]
  4. S.R. Restaino and D.M. Payne, “Adaptive optics on a shoe string,” Proc. SPIE 3494, 152–160, (1998).
    [Crossref]
  5. R.F. Dantowitz, S.W. Teare, and M. Kozubal, “Ground-based high-resolution imaging of Mercury,” Astron. J. 119, 2455–7, (2000).
    [Crossref]
  6. P. Nisenson and C. Papaliolios, “Detection of Earth-like Planets Using Apodized Telescopes,” Astrophys. J. 548(2), L201–5, (2001).
    [Crossref]

2001 (1)

P. Nisenson and C. Papaliolios, “Detection of Earth-like Planets Using Apodized Telescopes,” Astrophys. J. 548(2), L201–5, (2001).
[Crossref]

2000 (1)

R.F. Dantowitz, S.W. Teare, and M. Kozubal, “Ground-based high-resolution imaging of Mercury,” Astron. J. 119, 2455–7, (2000).
[Crossref]

1998 (2)

S.R. Restaino and D.M. Payne, “Adaptive optics on a shoe string,” Proc. SPIE 3494, 152–160, (1998).
[Crossref]

J.T. Baker, R. Dymale, R.A. Carreras, and S. Restaino, “Design and implementation of a low-cost starlight optical tracker system with 500 Hz active tip tilt control,” Computers and Electrical Engineering,  24(3-4), 123–133, (1998).
[Crossref]

1994 (1)

S.R. Restaino, R.R. Radick, G.C. Loos, and R.W. Conley, “A Validation of Interferometric Imaging from a Pupil Masking Experiment on a Solar Telescope,” Appl. Opt. 33, 19, 4143 (1994).
[Crossref]

Baker, J.T.

J.T. Baker, R. Dymale, R.A. Carreras, and S. Restaino, “Design and implementation of a low-cost starlight optical tracker system with 500 Hz active tip tilt control,” Computers and Electrical Engineering,  24(3-4), 123–133, (1998).
[Crossref]

Carreras, R.A.

J.T. Baker, R. Dymale, R.A. Carreras, and S. Restaino, “Design and implementation of a low-cost starlight optical tracker system with 500 Hz active tip tilt control,” Computers and Electrical Engineering,  24(3-4), 123–133, (1998).
[Crossref]

Conley, R.W.

S.R. Restaino, R.R. Radick, G.C. Loos, and R.W. Conley, “A Validation of Interferometric Imaging from a Pupil Masking Experiment on a Solar Telescope,” Appl. Opt. 33, 19, 4143 (1994).
[Crossref]

Dantowitz, R.F.

R.F. Dantowitz, S.W. Teare, and M. Kozubal, “Ground-based high-resolution imaging of Mercury,” Astron. J. 119, 2455–7, (2000).
[Crossref]

Dymale, R.

J.T. Baker, R. Dymale, R.A. Carreras, and S. Restaino, “Design and implementation of a low-cost starlight optical tracker system with 500 Hz active tip tilt control,” Computers and Electrical Engineering,  24(3-4), 123–133, (1998).
[Crossref]

Kozubal, M.

R.F. Dantowitz, S.W. Teare, and M. Kozubal, “Ground-based high-resolution imaging of Mercury,” Astron. J. 119, 2455–7, (2000).
[Crossref]

Loos, G.C.

S.R. Restaino, R.R. Radick, G.C. Loos, and R.W. Conley, “A Validation of Interferometric Imaging from a Pupil Masking Experiment on a Solar Telescope,” Appl. Opt. 33, 19, 4143 (1994).
[Crossref]

Nisenson, P.

P. Nisenson and C. Papaliolios, “Detection of Earth-like Planets Using Apodized Telescopes,” Astrophys. J. 548(2), L201–5, (2001).
[Crossref]

Papaliolios, C.

P. Nisenson and C. Papaliolios, “Detection of Earth-like Planets Using Apodized Telescopes,” Astrophys. J. 548(2), L201–5, (2001).
[Crossref]

Payne, D.M.

S.R. Restaino and D.M. Payne, “Adaptive optics on a shoe string,” Proc. SPIE 3494, 152–160, (1998).
[Crossref]

Radick, R.R.

S.R. Restaino, R.R. Radick, G.C. Loos, and R.W. Conley, “A Validation of Interferometric Imaging from a Pupil Masking Experiment on a Solar Telescope,” Appl. Opt. 33, 19, 4143 (1994).
[Crossref]

Restaino, S.

J.T. Baker, R. Dymale, R.A. Carreras, and S. Restaino, “Design and implementation of a low-cost starlight optical tracker system with 500 Hz active tip tilt control,” Computers and Electrical Engineering,  24(3-4), 123–133, (1998).
[Crossref]

Restaino, S.R.

S.R. Restaino and D.M. Payne, “Adaptive optics on a shoe string,” Proc. SPIE 3494, 152–160, (1998).
[Crossref]

S.R. Restaino, R.R. Radick, G.C. Loos, and R.W. Conley, “A Validation of Interferometric Imaging from a Pupil Masking Experiment on a Solar Telescope,” Appl. Opt. 33, 19, 4143 (1994).
[Crossref]

Teare, S.W.

R.F. Dantowitz, S.W. Teare, and M. Kozubal, “Ground-based high-resolution imaging of Mercury,” Astron. J. 119, 2455–7, (2000).
[Crossref]

Appl. Opt. (1)

S.R. Restaino, R.R. Radick, G.C. Loos, and R.W. Conley, “A Validation of Interferometric Imaging from a Pupil Masking Experiment on a Solar Telescope,” Appl. Opt. 33, 19, 4143 (1994).
[Crossref]

Astron. J. (1)

R.F. Dantowitz, S.W. Teare, and M. Kozubal, “Ground-based high-resolution imaging of Mercury,” Astron. J. 119, 2455–7, (2000).
[Crossref]

Astrophys. J. (1)

P. Nisenson and C. Papaliolios, “Detection of Earth-like Planets Using Apodized Telescopes,” Astrophys. J. 548(2), L201–5, (2001).
[Crossref]

Computers and Electrical Engineering (1)

J.T. Baker, R. Dymale, R.A. Carreras, and S. Restaino, “Design and implementation of a low-cost starlight optical tracker system with 500 Hz active tip tilt control,” Computers and Electrical Engineering,  24(3-4), 123–133, (1998).
[Crossref]

Proc. SPIE (1)

S.R. Restaino and D.M. Payne, “Adaptive optics on a shoe string,” Proc. SPIE 3494, 152–160, (1998).
[Crossref]

Other (1)

See for example, R.R. Shannon, The art and science of optical design (Cambridge University Press, New York,1997).

Cited By

OSA participates in Crossref's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (3)

Fig. 1.
Fig. 1.

Plots of the normalized optical transfer function for a regular telescope (15%) and one with a large (87.5%) central obscuration. Notice in the large obscuration case (right) that the contributions of the lower spatial frequencies are suppressed compared to the regular telescope (left).

Fig. 2.
Fig. 2.

Image of the moon from left to right showing a truth image, the truth image convolved with a 15% obscured telescope OTF with blurring similar to that caused by imaging through the atmosphere and the truth image convolved with an 87.5% obscured telescope OTF with image stabilization.

Fig. 3.
Fig. 3.

The factor that the exposure time must be increased as a function of obscuration, normalized to a 15% obscured OTF. For an 87.5% obscuration about 25% of the light gets through requiring an exposure of about 4 times as long to obtain the same signal-to- noise ratio. This represents the worst-case scenario as the desired signal to noise ratio of the spatial frequencies of interest could be met in less time.

Metrics