GSC+: Software for transferring the Guide Star Catalogue on the FK5 system

Author(s): Lopez Garcia, A; Yagudin, LI; Uso, MJM

Source: PLANETARY AND SPACE SCIENCE  Volume: 45   Issue: 7   Pages: 785-789   Published: JUL 1997

Software is developed for selection of star coordinates from the Hubble Space Telescope Guide Star Catalogue (GSC) CD-ROM and for correcting them for three kinds of systematic errors : (1) sky-based errors produced by reference catalogues, (2) plate-based errors produced by telescope optics and by incompleteness of the plate reduction model and (3) plate-based magnitude dependent errors produced by telescope optics and by incompleteness of the plate reduction model. GSC can be used now asa reference catalogue representing the FK5 system on about 0.4 arcsec accuracy level. Further improvement of. GSC, including individual plate error correction, is now under development. (C) 1997 Elsevier Science Ltd.