Altair Astro TMS Ultra Light Guidescope Rings 120mmThe Altair TMS Guide Scope Rings are available in 120mm They have a lightweight design unique to Altair Astro, which results in a far lighter guidescope ring, while still maintaining strength and rigidity. The Altair TMS uses durable all stainless steel M6 threads that means they will not corrode, unlike cheaper makes which use low grade blackened steel threads and screws, which eventually go brown with rust. The Altair Telescope Mounting System (TM)

high-resolution f/11

Secondary Mirror Diameter 82mm (minor axis)

It's a type of carbonaceous meteorite that has never been found outside of Antarctica

25" or 2" w/ LPFC

With this much light-gathering ability

V3 and V4 owners wanting to upgrade

either a tripod Ball Head is required (not supplied) or the supplied Dovetail L-Bracket

it’s ready to locate and track more than 40

Skywatcher Skyliner 250PX FlexTube SynScan Wifi GoTo Parabolic Dobsonian Telescope

Diaphragm: Disc diaphragm with 6 aperture sizes

Rocker Box Weight: 12kg

But it does require that the mount is ASCOM compatible (as most modern mounts are) and linked to the computer