Orion Optics UK 400mm Dobsonian Mount

This mount is designed to accept telescope optical tubes with an outer diameter of up to 434mm. It is specifically engineered to be the base for Orion Optics UK's 400mm (16-inch) Newtonian telescopes.

A Dobsonian mount provides a stable, low-to-the-ground platform that minimizes vibrations, which is crucial for the high magnifications used in planetary and lunar observing. Its simple alt-azimuth motion is intuitive, allowing you to manually track objects smoothly without the complexity of an equatorial mount, making for a more immediate and immersive observing session.

No. A standard Dobsonian mount like this one is an alt-azimuth design, meaning it moves in simple up-down, left-right motions. It does not track the arc of the stars across the sky, which is necessary to prevent star trails in long exposures. While it is excellent for visual observing and short-exposure planetary imaging, it is not designed for deep-sky astrophotography.

Absolutely. This mount provides the rock-solid stability required for high-magnification views of planets. When paired with a high-quality 400mm optical tube, this mount will allow you to manually track Jupiter's cloud bands or the Cassini Division in Saturn's rings with smooth, controlled movements.

The primary purpose of this mount is to provide an extremely stable, simple, and cost-effective mechanical base for a large 400mm Newtonian optical tube for visual astronomy. It prioritizes stability and ease of use over the complex tracking capabilities of more expensive equatorial mounts.

For best results, the mount should be placed on a firm, level surface such as concrete, a wooden deck, or hard-packed ground. Avoid soft grass or uneven soil, as this can cause the mount to become unstable and make smooth motions difficult, especially with a heavy optical tube.