J/A+AS/118/277 The astrometric accuracy of CdC plates (M. Geffert, 1996) ================================================================================ The astrometric accuracy of "Carte du Ciel" plates and proper motions in the field of the open cluster NGC 1647 M. Geffert, P. Bonnefond, G. Maintz, J. Guibert =1996A&AS..118..277I (SIMBAD/NED BibCode) ================================================================================ Keywords: astrometry - stars: individual: SZ Tau - Galaxy: open clusters: NGC 1647 Description: Catalogue of positions and proper motions of 2220 stars in the region of the open cluster NGC 1647. The mean accuracy of one proper motion is 1.7 mas/a. The epoch of the catalogue is 1950. The limiting magnitude is about V=14.5. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- table7 (len) (2220) Positions and proper motions of 2220 stars in the region of NGC 1647. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table7 -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 6- 09 I4 NR Internal star number 12- 13 I2 h RAh Right ascension (J2000) 15- 16 I2 min RAm Right ascension (J2000) 18- 23 F6.3 s RAs Right ascension (J2000) 26 A1 --- DE- Declination sign 27- 28 I2 deg DEd Declination (J2000) 30- 31 I2 arcmin DEm Declination (J2000) 33- 37 F5.2 arcsec DEs Declination (J2000) 40- 47 F8.1 [mas/a] PMa Proper motion in r.a. 50- 57 F8.1 [mas/a] PMd Proper motion in dec. -------------------------------------------------------------------------------- ================================================================================ (End) M. Geffert [Sternwarte der Universitaet Bonn] 17-Sep-1996