The Orion SkyLine 8" Dobsonian features an 8" (200mm) diameter parabolic primary mirror with 94%-96% reflectivity for bright views. The telescopes f/6 optics and long 1200mm focal length will provide bright views of celestial objects like the Moon and planets, and more distant fare such as cloudy nebulas, star clusters, and galaxies.

When you need to align the reflector telescopes optics, adjustments are quick and easy thanks to the tools-free, knurled primary mirror adjustment knobs and center-marked primary mirror. The secondary mirror has a 50mm minor-axis and its alignment can be adjusted with a Philips head driver. An included Orion LaserMate Deluxe II collimating tool will help you keep the SkyLine 8" Dobsonians mirrors in perfect alignment.

The SkyLine 8" features a machined, 2" Crayford focuser with dual-speed adjustment control and smooth, backlash-free motion. The fine-focus control knob allows you to dial-in details at a 10:1 ratio. An included adapter allows use of both 2" and 1.25" sized telescope eyepieces, and both the 2" and 1.25" holders feature non-marring compression rings to keep eyepieces in-place without scratching.

Two telescope eyepieces are included: the 30mm Erfle provides a wide, 40x view in the SkyLine 8" while the more powerful 9mm Plossl eyepiece yields views with 133x magnification. A handy eyepiece rack for the Dobsonian base is included, a 35mm-length 2" extension adapter is also included.

The included 8x50 finder scope is a premium right-angle model which displays a correct left/right and up/down oriented image for easy aiming of the 8" telescope. To reduce cool-down time, an included cooling fan can be plugged in (fan battery pack requires 8xAA batteries - not included) to help circulate air in the reflector optical tube for fast performance.

With an assembled weight of 54 lbs., the 45.25" long telescope optical tube can be separated from the Dobsonian base quickly for easy, two-component transport.