The steward observatory speckle interferometry system

E. K. Hege, E. N. Hubbard, Peter A Strittmatter, W. J. Cocke

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

An intensified video camera with digital video readout has been implemented for use with the Steward Observatory speckle camera. Video subtraction algorithms implemented in a Grinnell digital television system can provide either photoelectron response records for faint objects or background subtracted analogue records for bright objects. The required speckle image power spectra are computed indirectly from the autocorrelation functions accumulated from the event address lists produced for faint objects or directly by Fast Fourier Transform techniques from the analogue data for bright objects. Methods for producing properly deconvolved, noise bias corrected power spectra have been developed. The system has been applied successfully to recover high resolution images for objects ranging from magnitude 0 Capella to the magnitude 16 QSO PG1115+080A.

Original languageEnglish (US)
Pages (from-to)701-715
Number of pages15
JournalOptica Acta
Volume29
Issue number5
DOIs
StatePublished - 1982

Fingerprint

faint objects
speckle interferometry
Observatories
Speckle
Power spectrum
Interferometry
power spectra
observatories
cameras
digital television
analog data
television systems
Television systems
Digital television
Video cameras
Image resolution
Photoelectrons
Autocorrelation
subtraction
Fast Fourier transforms

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

The steward observatory speckle interferometry system. / Hege, E. K.; Hubbard, E. N.; Strittmatter, Peter A; Cocke, W. J.

In: Optica Acta, Vol. 29, No. 5, 1982, p. 701-715.

Research output: Contribution to journalArticle

Hege, E. K. ; Hubbard, E. N. ; Strittmatter, Peter A ; Cocke, W. J. / The steward observatory speckle interferometry system. In: Optica Acta. 1982 ; Vol. 29, No. 5. pp. 701-715.
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