58 citations · 162 across the 8 of their papers we have counts for
9 papers · 1 filter
Common Proper Motion Companions to Nearby Stars: Ages and Evolution
V. V. Makarov, N. Zacharias, G. S. Hennessy
A set of 41 nearby stars (closer than 25 pc) is investigated which have very wide binary and common proper motion (CPM) companions at projected separations between 1000 and $200 00…
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…
Realization and application of a 111 million pixel backside-illuminated detector and camera
Norbert Zacharias, Bryan Dorland, Richard Bredthauer +3
A full-wafer, 10,580 10,560 pixel (95 95 mm) CCD was designed and tested at Semiconductor Technology Associates (STA) with 9 um square pixels and 16 outputs. The…
The nearby young visual binary HIP 115147 and its common proper motion companion LSPM J2322+7847
V. V. Makarov, N. Zacharias, G. S. Hennessy +2
We report a late M-type, common proper motion companion to a nearby young visual binary HIP 115147 (V368 Cep), separated by 963 arcseconds from the primary K0 dwarf. This optically…
VLA+PT Astrometry of 46 Radio Stars
D. A. Boboltz, A. L. Fey, W. K. Puatua +4
We have used the Very Large Array (VLA), linked with the Pie Town Very Long Baseline Array antenna, to determine astrometric positions of 46 radio stars in the International Celest…
The concept of a stare-mode astrometric space mission
N. Zacharias, B. Dorland
The concept of a stare-mode astrometric space mission is introduced. The traditionally accepted mode of operation for a mapping astrometric space mission is that of a continuously…