This fits over your eyepiece projection adapter and is secured with the eyepiece set screw. It is actually very light and works great on any scope with tracking. The projection screen is top quality rear projection fabric and works extremely well with sharp resolution. This is great at schools and star parties because many people can see the image at the same time. I need cash so all my little extras must go. And I have purchased the materials to build a larger more elaborate dedicated solar projector for the next round of sun parties this spring. I prefer Postal Money Orders, but can work with any type of check or money order.
Thanks for looking,