This is a 6” Orion Equatorial Reflector Telescope. The aperture is 153 mm, the focal length is 750 mm, and f/4.9. Attached is a spotting scope, included is an alignment scope which mounts in the stand, and 2 lenses. The lenses are Plossl 9mm and 25mm. The stand is weighted and fully adjustable. Included on the stand is a tray for storage. This scope is a great choice for astronomy students, backyard viewing, or anyone who is serious about astronomy. This is a great price on a very respectable 6” telescope.