Here is everything you need for both "Prime Focus" and "Eyepiece Projection" astrophotography packaged together in one money saving easy to purchase kit. Fits any astronomical type telescope with a standard 1.25" eyepiece port.Included in this kit: Our "Variable Eyepiece Projection" adapter with integral "Prime Focus" adapter, a T-Ring to fit your brand of camera and a parfocalizing ring. The "Variable" feature lets you adjust the adapter length to vary the magnification (thus image size) for perfect framing of your shots. The "Parfocalizing Ring" lets you to match an eyepiece to your cameras focus point for easier high power focusing.NOTE: The eyepiece upper barrel can be no larger than 1.5" in diameter. Fits most Plossl eyepieces up to 26mm FL.Fits all Sony (Full Size "A" Mount) Alpha Digital SLR Cameras including models A37, A57, A65, A77, A99, A100, A200, A230, A290, A300, A330, A350, A380, A390, A450, A500, A550, A560, A580, A700, A850 and A900.DOES NOT FIT SPOTTING SCOPES WITH THREAD-ON OR BAYONET MOUNT EYEPIECES. THIS IS FOR TELESCOPES ACCEPTING STANDARDIZED SLIP-IN EYEPIECES WITH 1.25" DIAMETER LOWER BARRELS ONLY. ADDITIONAL PARTS MAY BE NEEDED FOR SOME REFRACTORS OR NEWTONIANS. PICTURES ARE REPRESENTATIVE OF THE PRODUCT LINE. THERE MAY BE SOME DIFFERENCES IN THE ACTUAL ITEM SHIPPED DEPENDING ON YOUR CAMERA MODEL OR IMPROVEMENTS TO THE ITEM.