The angular diameter of vesta from speckle interferometry

Simon P. Worden, Murray K. Stein, Gary D. Schmidt, J. R.P. Angel

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


It is shown that the autocorrelation function of a telescope diffraction-limited image is closely approximated by a subtraction of the mean cross correlation of pairs of speckle photographs from the mean autocorrelation of the same set of data. This fact is used to derive the angular diameter of the asteroid Vesta from a series of speckle interferometry data. The resultant apparent angular diameter of 0″.40 ± 0″.04 corresponds to an absolute diameter of 513 ± 51 km.

Original languageEnglish (US)
Pages (from-to)450-457
Number of pages8
Issue number4
StatePublished - Dec 1977

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


Dive into the research topics of 'The angular diameter of vesta from speckle interferometry'. Together they form a unique fingerprint.

Cite this