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A New High Density, High Precision Astrometric Catalog

Published online by Cambridge University Press:  25 May 2016

M.I. Zacharias,
G.L. Wycoff,
G.G. Douglass,
T.E. Corbin and
N. Zacharias
M.I. Zacharias
Affiliation:
Universities Space Research AssociationU. S. Naval Observatory, Washington, DC, USA
G.L. Wycoff
Affiliation:
U. S. Naval Observatory, Washington, DC, USA
G.G. Douglass
Affiliation:
U. S. Naval Observatory, Washington, DC, USA
T.E. Corbin
Affiliation:
U. S. Naval Observatory, Washington, DC, USA
N. Zacharias
Affiliation:
Universities Space Research AssociationU. S. Naval Observatory, Washington, DC, USA

Extract

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The Version 1.0 of the U.S. Naval Observatory Twin Astrographic Catalog (TAC) contains positions of 705,679 stars (Zacharias et al. 1996). The TAC 1.0 covers over 90% of the sky from +90° to −18° declination; 260 out of 5180 plates are not yet measured. Plates were taken in both the yellow (508-578 nm) and in the blue (410-486 nm) bandpass between 1978 and 1986 at the U.S. Naval Observatory (USNO) in Washington, DC.

References

Urban, S.E., Martin, J.C., Jackson, E.S., and Corbin, T.E. 1996 New Reductions of the Astrographic Catalogue: Plate adjustments of the Algiers, Oxford I and II, and Vatican Zones, Astron. Astrophys., 118, 163.Google Scholar
Zacharias, M.I., and Douglass, G.G. 1995 Preliminary Results of the U.S. Naval Observatory Twin Astrographic Catalog (TAC) Plate Reductions, Bull. Am. Astron. Soc. 27, 857.Google Scholar
Zacharias, N., Zacharias, M.I., Douglass, G.G., and Wycoff, G.L. 1996 The Twin Astrographic Catalog (TAC) Version 1.0, Astron. J., 112, 2336.Google Scholar