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The application of interferometry to optical astronomical imaging.
John E Baldwin1, Christopher A Haniff
1Department of Physics, University of Cambridge, Madingley Road, Cambridge CB3 0HE, UK.
Summary
Optical/infrared interferometry is crucial for ground-based astronomy. Future imaging arrays should prioritize numerous moderate-sized telescopes over a few large ones for optimal scientific and technical capabilities.
Area of Science:
- Astronomy
- Optical and Infrared Astronomy
- Interferometry
Background:
- Astronomical interferometry has evolved significantly, playing a key role in ground-based observations.
- Current interferometric arrays face limitations that necessitate advancements in design and technology.
Purpose of the Study:
- To review the current role and significance of optical/infrared interferometry in astronomy.
- To assess future prospects and optimal designs for ground-based astronomical imaging interferometry over the next decade.
Main Methods:
- Survey of the origins, motivations, techniques, and astronomical significance of interferometry.
- Analysis of astronomical and technical factors influencing imaging array design.
- Evaluation of scientific capability, technical feasibility, and cost for different array configurations.
Main Results:
- Optical/infrared interferometry is a vital tool in modern ground-based astronomy.
- Future imaging arrays should consist of numerous moderate-sized telescopes (e.g., 2m class).
Conclusions:
- An array of many moderate-sized telescopes is scientifically, technically, and economically superior to an array with few large telescopes for future imaging interferometry.
- This approach offers the best path forward for advancing ground-based optical and near-infrared astronomical imaging.