.help eg50 Jun99 "Slalib Package"
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      SUBROUTINE slEG50 (DR, DD, DL, DB)

     - - - - -
      E G 5 0
     - - - - -

  Transformation from B1950.0 'FK4' equatorial coordinates to
  IAU 1958 galactic coordinates (double precision)

  Given:
     DR,DD       dp       B1950.0 'FK4' RA,Dec

  Returned:
     DL,DB       dp       galactic longitude and latitude L2,B2

  (all arguments are radians)

  Called:
     slDS2C, slDMXV, slDC2S, slSUET, slDA2P, slDA1P

  Note:
     The equatorial coordinates are B1950.0 'FK4'.  Use the
     routine slEQGA if conversion from J2000.0 coordinates
     is required.

  Reference:
     Blaauw et al, Mon.Not.R.Astron.Soc.,121,123 (1960)

  P.T.Wallace   Starlink   5 September 1993

  Copyright (C) 1995 Rutherford Appleton Laboratory
  Copyright (C) 1995 Association of Universities for Research in Astronomy Inc.

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