SLA_EG50 - B1950 $\alpha,\delta$ to Galactic

ACTION:

Transformation from B1950.0 FK4 equatorial coordinates to IAU 1958 galactic coordinates.

CALL:

CALL sla_EG50 (DR, DD, DL, DB)

GIVEN:

DR,DD

D

B1950.0 $[ \alpha,\delta ]$ (radians)

RETURNED:

DL,DB

D

galactic longitude and latitude $[ l^{I\!I},b^{I\!I} ]$ (radians)

NOTE:

The equatorial coordinates are B1950.0 FK4. Use the routine sla_EQGAL if conversion from J2000.0 FK5 coordinates is required.

REFERENCE:

Blaauw et al., 1960, Mon.Not.R.astr.Soc., 121, 123.