A bit confusing, for a minute or three, as to determining how the OTA slips into the separately bought bracket. Without a manual and patience, I unscrewed the hood/dew cover and cell for the one glass objective, which needed cleaning, anyway! Also, separate, in the box was a loose rubber-like ring. I put ring at ledge inside cell for lens, re-assembled and did some visuals. Great little refractor. Nice that I can put in a 25mm plossl and get pristine, on-axis sharpness and brightness. Even came to focus with a cheap 10mm EP Highly recommended.