National Geographic 114/500 Compact Telescope With a 114 mm aperture, this compact telescope collects almost three times as much light as one with 76 mm. This makes smaller objects and finer details visible on the moon and other planets. Thanks to its Dobsonian design, the telescope is very compact, quick to set up (it is packaged fully assembled) and can easily be taken to an observation site. It can be operated intuitively without sacrificing stability. The integrated accessory tray keeps eyepieces and the Barlow lens always ready to hand and the red dot finder makes it easier to find objects.