Stellar Speckle Interferometry And Speckle Holography At Low Light Levels

Gerd P. Weigelt

doi:10.1117/12.959293

3 December 1980 Stellar Speckle Interferometry And Speckle Holography At Low Light Levels

Gerd P. Weigelt

Proceedings Volume 0243, Applications of Speckle Phenomena; (1980) https://doi.org/10.1117/12.959293
Event: 24th Annual Technical Symposium, 1980, San Diego, United States

Abstract

The turbulent atmosphere of the earth limits the resolution of conventional astrophotography to about 1 arc second. Much higher resolution can be obtained by Labeyrie's speckle interferometry. Speckle interferometry yields the diffraction-limited autocorrelation of astronomical objects, for example a resolution of 0.03 arc seconds in the case of a 3.6m telescope. After reviewing very briefly the method of speckle interferometry we will report the following projects (1) the reconstruction of direct images from speckle interferograms by using the speckle holography technique, i.e. the application of speckle interferometry for objects near to a point source. (2) Application of speckle interferometry for very faint astronomical objects by measuring the single photon events in speckle interferograms. We want to observe faint objects since many of the most interesting objects are rather faint as, for example, galactic nuclei and Quasars. In the following article we will describe various applications of speckle inter-ferometry and of speckle holography. The speckle holography measurements yielded direct images with diffraction-limited resolution. Speckle interferometry was successfully applied up to 14th magnitude.

Citation Download Citation

Gerd P. Weigelt "Stellar Speckle Interferometry And Speckle Holography At Low Light Levels", Proc. SPIE 0243, Applications of Speckle Phenomena, (3 December 1980); https://doi.org/10.1117/12.959293

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available