FUNCTION  fEqFromMuNu

Compute Equatorial coordinates from @mu and @nu

Compute both ra,dec anmd cx,cy,cz, given @mu,@nu, @node,@incl all in degrees

Input and output parameters

nametypelengthinoutpnum
@mufloat8input1
@nufloat8input2
@nodefloat8input3
@inclfloat8input4
rafloat8output1
decfloat8output2
cxfloat8output3
cyfloat8output4
czfloat8output5