Speckle Interferometry at the U.S. Naval Observatory. XVIII

Abstract

The results of 2490 intensified CCD observations of double stars, made with the 26 inch refractor of the U.S. Naval Observatory, are presented. Each observation of a system represents a combination of over 2000 short-exposure images. These observations are averaged into 1462 mean relative positions and range in separation from 0"56 to 71"80, with amean separation of 14"81. This is the 18th in this series of papers and covers the period 2011 January 3 through 2011 December 18. Also presented are four pairs which are resolved for the first time, thirteen other pairs which appear to be lost, and linear elements for four additional pairs.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 2012
Accession Number
ADA561759

Entities

People

  • Brian D. Mason
  • Elizabeth A. Friedman
  • William I. Hartkopf

Organizations

  • United States Naval Observatory

Tags

Communities of Interest

  • Autonomy

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Classification
  • Errors
  • Interferometry
  • Machines
  • Measurement
  • Mechanical Equipment
  • Observation
  • Observatories
  • Optical Equipment
  • Precision
  • Relative Motion
  • Spearography
  • Star Position
  • Telescopes
  • Time Intervals

Fields of Study

  • Physics

Readers

  • Astronomy/Astrophysics