Bushnell 78-9518 Deep Space 675 x 4.5-Inch Reflector Telescope 4.5-inch aperture mirror gathers light at up to 250 times the human eye Full-length variable tripod with equatorial mount for stability and steady viewing Focal ratio of f7.87, focal length of 900 mm, and magnification of 675 Assembled of all-metal optical tube and high-quality glass optic objectives Designed for the beginning and intermediate amateur astronomer