Added a transform function from Heliographic Stonyhurst to Heliocentric Cartesian. Have not factored occultation into the calculations. Need to discuss this. Seeing so many sin and cos terms, need to discuss whether a Dynamic or StaticMatrixTransform would a more suitable method of transformation.
Added a transform function from Heliographic Stonyhurst to Heliocentric Cartesian.
Have not factored occultation into the calculations. Need to discuss this.
Seeing so many sin and cos terms, need to discuss whether a Dynamic or StaticMatrixTransform would a more suitable method of transformation.

dpshelio/sunpy,Alex-Ian-Hamilton/sunpy,dpshelio/sunpy,Alex-Ian-Hamilton/sunpy,Alex-Ian-Hamilton/sunpy,dpshelio/sunpy