The 705AZ3 achromatic refractor telescope will expand your horizons. Mounted on a sturdy aluminum tripod, the telescope tube incorporates a two-element, air-spaced, all surface multi-coated objective lens optical design. With a wide 70mm (2.8") lens diameter and 500mm focal length, this well- proven performer will provide rich and crisp images with little or no chromatic aberration. Combined with its fast focal ratio and high-speed film, the 705AZ3 allows for capturing astronomical and terrestrial photographs. With an appropriate T-adapter, a camera can be connected directly to the T-mount thread on the eyepiece holder and a 60mm extension tube will allow for closer focusing.With a compressed length of only 15 inches, this solidly built telescope is light and portable. It is easy and quick to set-up, and the smooth alt-azimuth mount allows for precise control of the vertical and horizontal movements of the telescope main tube. High grade interchangeable eyepieces, rack and pinion focusing and a finderscope with crosshairs combine to make this a telescope of choice for both amateurs and professionals.