I spent a couple weeks researching that , more for wildlife photography,But the popular opinion is that the FZ cameras are not your best choice.
Kowa thinks they will have an eyepiece that will work shortly but it is still under development. Scopetronics recommended a setup but said the results would not be great.
Well, I recieved a "Digi-T" system from dkoptics. I have attached pics of how the setup works. Unfortunately, it is overcast here in So. California, so i'll have to wait until things clear up to test its capabilities. I'll hopefully be able to post some photos this weekend.
The Digi-T system comes in two pieces, a "Digi-T ring and a step ring. Optionally I purchased an telescope eyepiece.
This is the eyepiece and step ring attached to each other. The Digi-T ring is attached to the eyepiece supplying the thread that will screw into the step ring.
Everything attached to the camera.
And finally, the eyepiece is inserted into my Meade ETX-90.