615 citations · 1.1k across the 5 of their papers we have counts for
5 papers
The First U.S. Naval Observatory Robotic Astrometric Telescope Catalog (URAT1)
Norbert Zacharias, Charlie Finch, John Subasavage +14
URAT1 is an observational, astrometric catalog covering most of the Dec >= -15 deg area and a magnitude range of about R = 3 to 18.5. Accurate positions (typically 10 to 30 mas sta…
Speckle Interferometry at the U.S. Naval Observatory. XV
Brian D. Mason, William I. Hartkopf, Gary L. Wycoff
Results of 2433 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…
The Third US Naval Observatory CCD Astrograph Catalog (UCAC3)
N. Zacharias, C. Finch, T. Girard +27
The third US Naval Observatory (USNO) CCD Astrograph Catalog, UCAC3 was released at the IAU General Assembly on 2009 August 10. It is the first all-sky release in this series and c…
The StarScan plate measuring machine: overview and calibrations
Norbert Zacharias, Lars Winter, Ellis Holdenried +3
The StarScan machine at the U.S. Naval Observatory (USNO) completed measuring photographic astrograph plates to allow determination of proper motions for the USNO CCD Astrograph Ca…
The second US Naval Observatory CCD Astrograph Catalog (UCAC2)
N. Zacharias, S. E. Urban, M. I. Zacharias +4
The second USNO CCD Astrograph Catalog, UCAC2 was released in July 2003. Positions and proper motions for 48,330,571 sources (mostly stars) are available on 3 CDs, supplemented wit…