slaEg50 -

SYNOPSYS

void slaEg50(dr, dd, dl, db)

PARAMETERS

double dr
double dd
double *dl
double *db

DESCRIPTION 


  Transformation from B1950.0 'FK4' equatorial coordinates to
  IAU 1958 Galactic coordinates.

  (double precision)

Given

     dr,dd       double       B1950.0 'FK4' RA,dec

Returned

     *dl,*db     double       Galactic longitude and latitude l2,b2

  (all arguments are radians)

Called

     slaDcs2c, slaDmxv, slaDcc2s, slaSubet, slaDranrm, slaDrange

Note

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

Reference

     Blaauw et al, Mon.Not.R.astron.Soc.,121,123 (1960)

  P.T.Wallace   Starlink   16 November 1993

SEE ALSO