Towards a Square-Kilometer Optical Telescope: The Potential of Intensity Interferometry
Abstract
Kilometric-scale optical baselines are required for imaging features across stellar disks. Ground-based intensity interferometry is insensitive to both atmospheric turbulence and to imperfections in telescope optics, permitting long-baseline observations even at short optical wavelengths. Its required large flux collectors are becoming available as arrays of atmospheric Cherenkov telescopes set up for studying energetic gamma rays. High-speed detectors and digital signal handling enable very many baselines to be synthesized in software between numerous pairs of telescopes in a digital revival of a technique once pioneered by Hanbury Brown & Twiss.
- Publication:
-
Revista Mexicana de Astronomia y Astrofisica Conference Series
- Pub Date:
- February 2010
- Bibcode:
- 2010RMxAC..38...17D
- Keywords:
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- instrumentation: high angular resolution;
- instrumentation: interferometers;
- stars: individual