CDROM/AJ/V106/P0352 Speckle Observations (Hartkopf+ 1993) ================================================================================ ICCD Speckle Observations of Binary Stars. VIII. Measurements During 1989-1991 from the Cerro Tololo 4 m Telescope William I. Hartkopf, Brian D. Mason, Donald J. Barry, Harold A. McAlister, William G. Bagnuolo, & Cristina M. Prieto <1993, AJ, 106, 352> =1993AJ....106..352H ================================================================================ Abstract: One-thousand eighty-eight observations of 947 binary star systems, observed by means of speckle interferometry with the 4 m telescope on Cerro Tololo, are presented. These measurements, made during the period 1989-1991, comprise the second installment of results stemming from the expansion of our speckle program to the southern hemisphere. File Summary: -------------------------------------------------------------------------------- File Name Lrecl Records Explanations -------------------------------------------------------------------------------- table1.dat 72 1088 Binary star speckle measurements notes1.dat 80 109 Notes to table 1 notes1.tex 71 140 TeX version of notes1.dat -------------------------------------------------------------------------------- Comments for file: table1.dat -------------------------------------------------------------------------------- Table 1 contains measurements from the CTIO 4 m telescope, obtained during 1989 December, 1990 May and 1991 May. The coordinates, which also serve as the Washington Double Star Catalog (WDS) number, are for equinox 2000.0, but position angles have not been corrected for precession and are thus based upon the equinox for the epoch of observation, shown as the fraction of the Besselian year. Accuracies for angular separation and position angle are a function of stellar magnitude, magnitude difference, separation, and observing conditions; typical values for these observations are perhaps 1-3 milliarcsec in separation and 0.1-0.2 arcsec in position angle. Colons following the values indicate measurements of somewhat reduced accuracy, usually as a result of observing fainter systems or systems of larger magnitude difference. If the coordinate and desiginations fields are blank, that indicates an additional observation for the previous object. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 F2.0 h RAh Right Ascension, equinox 2000.0 3- 5 F3.1 min RAm R.A. (implicit dec. pt. between bytes 4 & 5) 6 A1 --- DE- Sign of Declination, 2000.0 7- 8 F2.0 deg DEd Dec. 9-10 F2.0 arcmin DEm Dec. 11-12 2X --- --- Blank 13-21 A9 --- Name ADS, HR, or DM designation 22-23 2X --- --- Blank 24-35 A12 --- Disc Discoverer designation 36-37 2X --- --- Blank 38-45 A8 --- HD Henry Draper designation 46-47 2X --- --- Blank 48-56 F9.4 BY ObsDate Besselian year of observation 57-58 2X --- --- Blank 59-63 F5.1 deg PA Position angle 64 A1 --- u_PA Uncertainty flag for PA 65-66 2X --- --- Blank 67-71 F5.3 arcsec Sep Angular Separation 72 A1 --- u_Sep Uncertainty flag for Sep -------------------------------------------------------------------------------- Byte-by-byte Description of file: notes1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1-80 A80 --- Note Text of note, in free-text format -------------------------------------------------------------------------------- ================================================================================ (End) Lee Brotzman [ADS] 08-Mar-1995