Is there any way to get the interplanetary phase angle in ksp vanilla?

[manuelasa1999]

Hi ksp players! Recently I discovered ksp.olex.biz, it says that you have to set a maneuver node to the target planet when the phase angle is x and your angle to prograde must be Y, question: Is there any way to get exactly X and Y in ksp vanilla?

[Kasuha]

I recommend you using alexmoon's calculator, it will tell you which day you need to start your transfer. Eyeballing the extraction angle is not that much of a problem. When setting up a maneuver, it is good to set up normal part of the vector first, then add the prograde part to the full maneuver dv. And then perform some adjustments to get the intercept.