Abstract

Measurements are presented of lens-atmosphere modulation transfer functions for short-exposure speckle imaging at the AMOS observatory in Maui, Hawaii. Star images were recorded with a video sensor system and processed digitally. Near-diffraction-limited modulation transfer functions were recorded and analyzed for a 122 cm aperture instrument during fair to poor seeing conditions. Mean values for <i>r</i><sub>0</sub>, the aperture wavefront correlation scale, ranged between 4.1 and 6.4 cm. Total projected rms image wander ranged from 0.2 to 1.1 arcsec. The results are in substantial agreement with theoretical predictions and laboratory simulation results.

© 1976 Optical Society of America

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  1. A. Labeyrie, "Attainment of Diffraction Limited Resolution in Large Telescopes by Fourier Analyzing Speckle Patterns in Star Images," Astron. Astrophys. 6, 85–87 (1970).
  2. D. Korff, "Analysis of a method for obtaining near-diffractionlimited information in the presence of atmospheric turbulence," J. Opt. Soc. Am. 63, 971–980 (1973).
  3. C. Aime, "Measurement of averaged squared modulus of atmospheric-lens modulation transfer function," J. Opt. Soc. Am. 64, 1129–1132 (1974).
  4. D. P. Karo and A. M. Schneiderman, "Laboratory Simulation of Speckle Interferometry," (unpublished).
  5. A. Labeyrie, "Observations Interférométriques au Mont Palomar," Nouv. Rev. Opt. 5, 141–151 (1974).
  6. The SIT tube system used was model 1205D of the SSR Instruments Co.
  7. The MTF calculation of D. Korff (Ref. 2) involves a number of approximations which may make the high-frequency level uncertain by up to, perhaps, a factor of 2 [D. Korff (private communication) ].
  8. D. Korff, G. Dryden, and M. G. Miller, "Information Retrieval from Atmospheric Induced Speckle Patterns," Opt. Commun. 5, 187–192 (1972).
  9. If all the image wander were due to atmospheric phase effects, a wave front phase deviation up to nine waves would be implied [M. G. Miller (private communication)].

1974

C. Aime, "Measurement of averaged squared modulus of atmospheric-lens modulation transfer function," J. Opt. Soc. Am. 64, 1129–1132 (1974).

A. Labeyrie, "Observations Interférométriques au Mont Palomar," Nouv. Rev. Opt. 5, 141–151 (1974).

1973

1972

D. Korff, G. Dryden, and M. G. Miller, "Information Retrieval from Atmospheric Induced Speckle Patterns," Opt. Commun. 5, 187–192 (1972).

1970

A. Labeyrie, "Attainment of Diffraction Limited Resolution in Large Telescopes by Fourier Analyzing Speckle Patterns in Star Images," Astron. Astrophys. 6, 85–87 (1970).

Aime, C.

Dryden, G.

D. Korff, G. Dryden, and M. G. Miller, "Information Retrieval from Atmospheric Induced Speckle Patterns," Opt. Commun. 5, 187–192 (1972).

Karo, D. P.

D. P. Karo and A. M. Schneiderman, "Laboratory Simulation of Speckle Interferometry," (unpublished).

Korff, D.

D. Korff, "Analysis of a method for obtaining near-diffractionlimited information in the presence of atmospheric turbulence," J. Opt. Soc. Am. 63, 971–980 (1973).

D. Korff, G. Dryden, and M. G. Miller, "Information Retrieval from Atmospheric Induced Speckle Patterns," Opt. Commun. 5, 187–192 (1972).

Labeyrie, A.

A. Labeyrie, "Observations Interférométriques au Mont Palomar," Nouv. Rev. Opt. 5, 141–151 (1974).

A. Labeyrie, "Attainment of Diffraction Limited Resolution in Large Telescopes by Fourier Analyzing Speckle Patterns in Star Images," Astron. Astrophys. 6, 85–87 (1970).

Miller, M. G.

D. Korff, G. Dryden, and M. G. Miller, "Information Retrieval from Atmospheric Induced Speckle Patterns," Opt. Commun. 5, 187–192 (1972).

Schneiderman, A. M.

D. P. Karo and A. M. Schneiderman, "Laboratory Simulation of Speckle Interferometry," (unpublished).

Astron. Astrophys.

A. Labeyrie, "Attainment of Diffraction Limited Resolution in Large Telescopes by Fourier Analyzing Speckle Patterns in Star Images," Astron. Astrophys. 6, 85–87 (1970).

J. Opt. Soc. Am.

Nouv. Rev. Opt.

A. Labeyrie, "Observations Interférométriques au Mont Palomar," Nouv. Rev. Opt. 5, 141–151 (1974).

Opt. Commun.

D. Korff, G. Dryden, and M. G. Miller, "Information Retrieval from Atmospheric Induced Speckle Patterns," Opt. Commun. 5, 187–192 (1972).

Other

If all the image wander were due to atmospheric phase effects, a wave front phase deviation up to nine waves would be implied [M. G. Miller (private communication)].

The SIT tube system used was model 1205D of the SSR Instruments Co.

The MTF calculation of D. Korff (Ref. 2) involves a number of approximations which may make the high-frequency level uncertain by up to, perhaps, a factor of 2 [D. Korff (private communication) ].

D. P. Karo and A. M. Schneiderman, "Laboratory Simulation of Speckle Interferometry," (unpublished).

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