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Published on: October 20, 2011
Adjusting spatially separated plane mirrors to coplanarity.
Applied Optics
|March 18, 2010
Summary
A novel interferometric technique precisely aligns mirrors in a Michelson stellar interferometer. This method achieves high accuracy, comparable to the wavelength of light, for astronomical observations.
Area of Science:
- Optical astronomy
- Interferometry
Background:
- Accurate alignment of optical components is crucial for stellar interferometry.
- Michelson stellar interferometers require precise coplanarity of base plane mirrors.
Purpose of the Study:
- To develop and demonstrate an interferometric technique for setting base plane mirrors to coplanarity.
- To assess the precision and scalability of the developed alignment method.
Main Methods:
- Utilized a white light fringe setting interferometric technique.
- Applied the method to align mirrors defining the base plane in a Michelson stellar interferometer.
Main Results:
- Successfully achieved coplanarity of the base plane mirrors.
- Demonstrated the technique's potential for extension to very large mirror separations.
- Visual setting precision was found to be on the order of the wavelength of light.
Conclusions:
- The white light fringe setting interferometric technique provides a precise method for aligning stellar interferometer components.
- The technique is scalable for future large-scale interferometric observatories.
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