Subroutine: IRPL_STANDARD Purpose: Defines standard plate system and delivers parameters. File: irpl_standard.shl. Author: 86 Apr 25 Wim van Oosterom. Use: call IRPL_STANDARD ( obsmode I integer plcenter O doubleprecision(2,nplate) plsize O doubleprecision(2,nplate) nplate I/O integer ) obsmode 1 for raw data; 2 for splines; otherwise no plate system (nplate = 0) plcenter longitude, latitude of the plate plsize lon. and lat. size of the plate nplate in: maximum number of plates out: actual number of plates Description: The plate sizes are the same for plates at the same latitude. They decrease from the ecliptic equator to the ecliptic poles: 15.30, 15.35, 14.25, 13.62, 12.75, 11.15, 9.62, 8.10, 6.85, 5.22, 4.30 for raw data and 52.5, 45.5, 30.5, 19.5 for splines (All sizes are in degrees). The minimum overlap between the plates is 1.5 degree. The rotation angles of the plates are zero. The centers and the sizes are valid in any coordinate system; Both IRAS plate systems though, are defined in the ECLIPTIC system of epoch 1983.5 Externals: IRPL_PLATECENTER References: IRPL_PLATE Updates: 90 Jul 12 Do Kester, plate angles are zero by default; add splines 90 May 1 Sjag Steensma; documentation only.