Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1964
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1964natur.201.1111b&link_type=abstract
Nature, Volume 201, Issue 4924, pp. 1111-1112 (1964).
Astronomy and Astrophysics
Astronomy
8
Scientific paper
IT has been shown by Hanbury Brown and Twiss1-3 that the correlation between the fluctuations in the outputs of two photo-electric detectors illuminated by a source of finite size depends on the angular distribution of brightness over the source. Measurement of the variation of this correlation with separation of the two detectors thus provides a method of measuring the angular diameters of bright stars. An experimental interferometer in which the photo-electric detectors were situated at the foci of two searchlight mirrors was constructed at Jodrell Bank in 1956 and successfully tested on Sirius4,5. Following this work a large instrument was designed to measure all the stars in the Southern Hemisphere of spectral type earlier than FO which are brighter than photographic magnitude + 2.5. The new instrument differs chiefly from the pilot model4 in having mirrors of diameter 22 ft. moving on a circular railway track of diameter 618 ft. corresponding to a maximum resolution of the order of 0.0005 sec. This stellar intensity interferometer6, which will be described in detail elsewhere, is at present nearing completion at the Narrabri Observatory of the Chatterton Department of Astronomy of the School of Physics, University of Sydney.
No associations
LandOfFree
A Preliminary Measurement of the Angular Diameter of α-Lyrae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Preliminary Measurement of the Angular Diameter of α-Lyrae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Preliminary Measurement of the Angular Diameter of α-Lyrae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1056168