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For broader coverage of this topic, see Astronomical interferometry.
In optical astronomy, interferometry is used to combine signals from two or more telescopes to obtain measurements with higher resolution than could be obtained with either telescopes individually. This technique is the basis for astronomical interferometer arrays, which can make measurements of very small astronomical objects if the telescopes are spread out over a wide area. If a large number of telescopes are used a picture can be produced which has resolution similar to a single telescope with the diameter of the combined spread of telescopes. These include radio telescope arrays such as VLA, VLBI, SMA, astronomical optical interferometer arrays such as COAST, NPOI and IOTA, resulting in the highest resolution optical images ever achieved in astronomy. The VLT Interferometer is expected to produce its first images using aperture synthesis soon[needs update], followed by other interferometers such as the CHARA array and the Magdalena Ridge Observatory Interferometer which may consist of up to 10 optical telescopes. If outrigger telescopes are built at the Keck Interferometer, it will also become capable of interferometric imaging.
and 25 Related for: Astronomical optical interferometry information
In optical astronomy, interferometry is used to combine signals from two or more telescopes to obtain measurements with higher resolution than could be...
baseline interferometry. Astronomicalopticalinterferometry has had to overcome a number of technical issues not shared by radio telescope interferometry. The...
provide higher resolution images of astronomical objects such as stars, nebulas and galaxies by means of interferometry. The advantage of this technique...
Development of radio interferometry, from AstronomicalOpticalInterferometry, A Literature Review by Bob Tubbs, Cambridge, 2002 Cambridge Optical Aperture Synthesis...
used in the testing of optical components. In 1946, a technique called astronomicalinterferometry was developed. Astronomical radio interferometers usually...
spectrum emitted by astronomical objects, just as optical telescopes are the main observing instrument used in traditional optical astronomy which studies...
1189. Young & Freedman (2020), pp. 1191–1192. P. Hariharan (2003). OpticalInterferometry (PDF) (2nd ed.). San Diego, US: Academic Press. ISBN 978-0-12-325220-3...
overcame the optical shortcomings of 17th-century objective lenses, etc. Optical telescopes can be classified by three primary optical designs (refractor...
The Navy Precision Optical Interferometer (NPOI) is an American astronomical interferometer, with the world's largest baselines, operated by the Naval...
telescopes may use aperture synthesis through interferometry. Telescopes designed to be used as opticalastronomical interferometers such as the Keck I and II...
"fixed" astronomical objects, such as a star, to pass in front of the antenna every time the Earth rotated. By comparing his observations with optical astronomical...
effect to measure the mass of stars. The spacecraft would have used opticalinterferometry to accomplish these and other scientific goals. The initial contracts...
basics Tutorial on nulling interferometry Progress Toward Astronomical Nulling (Criteria governing efficacy of nulling interferometry), Chapter 10 of the Terrestrial...
COAST, the Cambridge Optical Aperture Synthesis Telescope, is a multi-element opticalastronomical interferometer with baselines of up to 100 metres,...
being applied to optical telescopes using optical interferometers (arrays of optical telescopes) and aperture masking interferometry at single reflecting...
Interplanetary Communication by Optical Masers". However, the 1971 Cyclops study discounted the possibility of optical SETI, reasoning that construction...
the twentieth century saw rapid technological advances in astronomical instrumentation. Optical telescopes were growing ever larger, and employing adaptive...
theory occasions when the neutrino signal from an astronomical event might reach Earth before an optical signal can, like supernovae. Whereas moving objects...
after French physicist Georges Sagnac, is a phenomenon encountered in interferometry that is elicited by rotation. The Sagnac effect manifests itself in...
holographic gratings and their potential for astronomical applications" (PDF). Proc. SPIE. OpticalAstronomical Instrumentation. 3355: 866–876. Bibcode:1998SPIE...
developed, with good results. See adaptive optics, speckle imaging and opticalinterferometry. Astronomy Astrophotography Amateur telescope making Bahtinov mask...
to be investigated at the atomic, molecular and macro scale, and over astronomical distances. Historically, spectroscopy originated as the study of the...
using very-long-baseline interferometry while the Gaia-CRF is an inertial barycentric reference frame defined by optically measured positions of extragalactic...
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