Abstract
view Abstract Citations (13) References (15) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Relative Astrometry with the Steward Observatory CCD/Transit Instrument Benedict, G. F. ; McGraw, J. T. ; Hess, T. R. ; Cawson, M. G. M. ; Keane, M. J. Abstract The CCD/Transit Instrument can produce relative astrometry with 1-sigma errors of less than 40 mas for stars brighter than V = 17. This figure of merit is obtained from ten nights' data. This precision is obtained over a test region of 8 x 12 arcmin, using simple first-moment centering algorithms. Errors for stars with V from 17.0 to 18.8 range from 40 to 100 mas. Some 3-sigma proper motions are detected. The test field sample contains three stars with proper motions larger than 20 mas/year. Four of the five stars in the test region with colors indicating spectral type M2 or later have statistically significant proper motions. Publication: The Astronomical Journal Pub Date: January 1991 DOI: 10.1086/115687 Bibcode: 1991AJ....101..279B Keywords: Astrometry; Astronomical Observatories; Charge Coupled Devices; Astronomical Spectroscopy; Photographic Plates; Position (Location); Sky Surveys (Astronomy); Astronomy; ASTROMETRY; STARS: PROPER-MOTION full text sources ADS |
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