Dobsonian

A Dobsonian is a Newtonian reflector telescope mounted on a simple wooden or composite rocker box instead of a tripod with slow-motion controls. The design, popularized by amateur astronomer John Dobson, swings smoothly up and down and rotates side to side by hand, using Teflon pads or bearings for friction-free movement. This stripped-down mount removes most of the cost that goes into motorized or counterweighted mounts, so the money goes into a larger mirror instead.

That tradeoff is exactly why Dobsonians are recommended so often for beginners who want to see faint deep-sky objects: for a given budget, a Dobsonian typically has significantly more aperture than an equatorial reflector or refractor. The simple mount also makes them fast to set up, since there is no polar alignment step, just point and look.

The compromise is that a basic Dobsonian does not track the sky automatically, so an object slowly drifts out of view and needs to be nudged back in manually, and larger models can be bulky to transport in a small car. When buying, check the base's smoothness of motion and whether the mirror is easy to collimate, since a stiff or wobbly base undermines the simple, intuitive aiming that makes this design appealing in the first place.