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Resonance

, Volume 23, Issue 12, pp 1367–1373 | Cite as

Introduction to the Techniques of Interferometry and Lunar Occultation in Radio Astronomy

  • Padmanabh Shrihari SarpotdarEmail author
General Article
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Abstract

Radio telescopes allow a 24 × 7 observation time window of those regions of the space which appear dark in the visible region. But, the major problem with a single radio telescope is its poor resolution. In this article, the method of interferometry in radio astronomy is discussed by citing the example of a two-element interferometer. Interferometry provides improved resolution.With a single telescope as well, the resolution can be improved for the radio sources along the ecliptic which are smaller in angular spread as compared to the Moon. The theoretical principle behind the technique of occultation is discussed using its optical analog of diffraction.

Keywords

EM spectrum antenna Jansky interferometer array baseline correlator Fourier transform lunar occultation Fresnel diffraction convolution 

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Copyright information

© Indian Academy of Sciences 2018

Authors and Affiliations

  1. 1.Khare-Dhere-Bhosale CollegeRatnagiriIndia

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