Loading The Saturn Object and Creating Transparency For The Rings First download the OBJ/MTL and the JPEGs and put them all in the same folder. Close all the editors and render.
From the Primitives Menu, click the Import Menu Icon and select "Load Mesh". When the hand cursor appears click and drag from the center of the screen. This will load the image textures automatically.
Now the Saturn Object's Import tool opens. We now need to add the image alpha transparency to the rings so click the circle M.
This opens Saturn's Material editor. Now click on the new Circle M and click on the left arrow next to Material 1.
This opens the Ring Texture editor. At bottom left click the half circle next to Transparency and select Texture.
At the top of the Transparency editor, click the Disk Icon and select New Texture. Now click the Circle T.
Click on the little down arrow in the Edit Fractal field (defaults to Mono Fractal) and select Bitmap Node.
The Fractal Controls change and at top right select the Disk Icon at the far right of File Name. Select ringtrans.jpg from the File Selector and OK.
Select the down arrow from the Coordinate Position Edit (defaults to World Position) and select UV Position. The grayscale transmap should appear in the preview.
