From Fringes to the USNO Navy Prototype Optical Interferometer Astrometric Catalog

Abstract

We report progress on the United States Naval Observatory, Navy Prototype Optical Interferometer, Astrometric Catalog (UNAC). This catalog uses observations from eight astrometric observation runs (Jan. 2005 - Nov. 2009) at the Navy Prototype Optical Interferometer (NPOI). The goal of the first release of the UNAC is to provide an astrometric catalog of at least 100 bright (V < 6) stars with precise positions accurate to < 16 milliarcseconds. In this paper we report on some of the data processing methods used to obtain absolute astrometric positions from optical interferometer data. We also discuss plans for assessing the accuracy of our interferometrically derived absolute astrometric positions.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2010
Accession Number
ADA534854

Entities

People

  • D. J. Hutter
  • H. C. Harris
  • J. A. Benson
  • K. J. Johnston
  • P. D. Shankland
  • Robert T. Zavala

Organizations

  • United States Naval Observatory Flagstaff Station

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Data Processing
  • Interferometers
  • Interferometry
  • Measurement
  • Measuring Instruments
  • Metrology
  • Observation
  • Observatories
  • Optical Interferometers
  • Precision
  • Prototypes
  • Radio Interferometers
  • Radio Interferometry

Fields of Study

  • Physics

Readers

  • Astronomy/Astrophysics
  • Technical Research and Report Writing.