Synastry consists of the comparison of two natal charts. One is overlayed upon the other to see where the individual’s planets effect the other person’s chart. This is used to find compatibility between to people and issues that can be worked on.
The Composite Chart is the chart describing the relationship. It does not speak of compatibility or what the individuals need to do to make the relationship work. It is a difficult concept to wrap the mind around, the Composite is it’s own entity, as the relationship is it’s own entity. There is nothing we can do as individuals to change those energies. The Composite is made by finding the midpoints between the individual’s planets. The Composite MC is figured by the MC midpoints and the rest of the houses accordingly.
The Davison Relationship chart is similar to the Composite chart…. except that instead of midpoints…. The chart is calculated by finding the midpoints in time and space…. meaning the Davison will have a birthdate (midpoint between the two individuals) and will have a geographical location (midpoint between the 2 birth locations…. don’t be surprised to find it in the ocean) I like the Davison, because with the time and location, it can be made into a synastry chart to run against an individual…. I imagine it can have it’s own solar arc charts also.
So which one do we start with? In a correspondence with Celeste Teal she said the profound….. start with the natals. Find out if the couple could even stand each other. That is a great point. If person A has a Moon square Venus… that isn’t going to play well with most partners. Does the person have volatile possibilities? Does the chart show acceptable drive for the other person? The first layer of problems will come from the individuals…. not the other charts. I would also suggest then looking at the individual persona charts and find out what the make up of a planet is and if that would defuse some problem spots. Don’t forget to look for dignities and receptions. Sometimes that Moon square Venus isn’t so bad… the Moon may be in Libra ( received by Venus) and Venus in Cancer maybe in the 4th house (accidental dignity).
I would then write up a list of the Antiscions and Contra Antiscions. When going over the other charts this could come in handy. With conjunctions between planets, this may be where you will find the compatibility.
Next, what the composite chart doesn’t do is give planetary midpoints except to same planets. Run a mid point chart for each individual and keep the data handy. That Moon and Venus square may have a midpoint that is equal to Neptune…. maybe that individual has to take a more spiritual path in relationships…. or with Neptune, tends toward escapism. That is the point of reconciliations for that aspect… and who knows, the other individual may have their Sun there…. so the square isn’t so bad again. Now do the same formulations for the couple. A’s Sun to B’s Moon, B’s Sun to A’s Moon and all the way down the planets. Time consuming, this link may help.
Now you should have a good feel of the individuals and can go on to the synastry, composite, and Davison charts. Future blogs will cover how to read each of those effectively and additional tools that have been applied by different astrologers.