The present “state of the art” and the path to future progress in high-spatial-resolution
imaging interferometry is reviewed. The review begins with a treatment of the fundamentals …

This book deals with the fundamentals of stellar interferometry with emphasis on aperture
synthesis using sparse array of telescopes particularly at optical/IR wavelengths, the origin …

Two physical phenomena,(i) diameter of the collecting area of a telescope and (ii)
turbulence in the atmosphere which introduces fluctuations in the index of refraction along …

The current status of the high spatial resolution imaging interferometry in optical astronomy
is reviewed in the light of theoretical explanation, as well as of experimental constraints that …

The speckle imaging is a photographic technique that resolves objects viewed through
severely distorted media. The results are insensitive to the errors caused by apparent size of …

Understanding the stars is the bedrock of modern astrophysics. Stars are the source of life.
The chemical enrichment of our Milky Way and of the Universe with all elements heavier …

The atmospheric coherence is a highly variable parameter depending upon the high velocity
wind. The size of the atmospheric coherence length widely known as, Fried's parameter, ro …

Speckle interferometric technique is employed to record a series of hundreds of short-
exposure images of several close binary stars with sub-arcsecond separation through a …

This article begins with the discussions on the formation of speckles in the case of non-
coherent quasi monochromatic source and of ways to detect them. Prior to this, a brief …