sony mavica adapter questions

I would ilke to try taking some photos thru my C8,C90 or
ETX90 using a older sony maciva 73 camera. Im guessing this
would be eyepiece projection?
Also is there a webpage where I can find one for sale or
better yet the basics of how one works, I have the equipment
to machine one but lack the vision.

Charles,

You would be using afocal projection since the lens on the camera can't be removed. Basically, you just need an adapter with 37mm threads on it that will fit on one or more of your eyepieces. You can attach that to an eyepiece, then screw it into the filter threads on your camera. The widest selection of adapters is a available at http://www.scopetronix.com Some eyepieces work better than others but in general, the wider the apparent field of view and greater the eye relief the better. Since your scopes have fairly long focal lengths I'd suggest using an eyepiece in the 25 to 40mm range to start off with.

Joplin