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Related Experiment Videos

Wide-field Fizeau imaging telescope: experimental results.

R L Kendrick1, Jean-Noel Aubrun, Ray Bell

  • 1Lockheedmartin Advanced Technology Center, Palo Alto, California 94304, USA. rick.kendrick@lmco.com

Applied Optics
|June 17, 2006
PubMed
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A novel nine-aperture Fizeau imaging telescope achieves diffraction-limited resolution using coherently phased collector telescopes. Active control corrects wavefront errors, enabling high-resolution astronomical observations.

Area of Science:

  • Optical astronomy
  • Telescope engineering
  • Wavefront sensing

Background:

  • Wide-field imaging requires advanced optical systems.
  • Coherent phasing of multiple apertures enhances resolution.
  • Active wavefront control is crucial for diffraction-limited performance.

Purpose of the Study:

  • To describe the design and performance of a nine-aperture Fizeau imaging telescope.
  • To demonstrate diffraction-limited imaging with a synthetic aperture.
  • To present the active control system for tilt and phasing correction.

Main Methods:

  • Construction of a nine-aperture Fizeau imaging telescope with 125 mm collectors.
  • Coherent phasing of collector telescopes to form a synthetic aperture.

Related Experiment Videos

  • Implementation of phase diversity for wavefront sensing and active control.

    • Main Results:

    • Achieved diffraction-limited resolution consistent with a 610 mm aperture.
    • Measured a phased field of view of 1 microradian.
    • Recorded a root-mean-square (rms) wavefront error of 0.08 waves at 635 nm.

    Conclusions:

    • The nine-aperture Fizeau telescope successfully demonstrates coherent phasing for high-resolution imaging.
    • Active control using phase diversity effectively corrects optical aberrations.
    • This technology enables advanced wide-field astronomical observations.