Mounting system
The cleverest mounting system.
Mount your secondary telescope or camera directly on the counterweight bar. The equipment itself does the balancing — no extra counterweights needed, less total weight, more flexibility.

In a conventional setup, a guide scope or camera rides on top of the primary telescope. This raises the centre of mass and requires more counterweights to compensate — adding weight to fight weight.
DuoScope reverses this logic. The secondary instrument attaches to the counterweight bar on the opposite side of the mount, acting as its own counterweight. The result: the system balances with less metal, the total assembly weighs less, and the mount is less stressed.
Five interchangeable configurations cover single telescopes, dual telescopes, camera-only and mixed setups. Any configuration converts to another through available accessories — you keep your investment as your needs change.
All DuoScope models share the same bar-mounting principle and are interchangeable through accessories. Choose the configuration that fits your current workflow — and change it later if you need to.
Attaches a telescope or camera to the end of the counterweight bar with full fine-positioning controls: ±9° in declination and ±6° in elevation. Available in standard and Vixen dovetail versions.
Foundation modelHolds a single telescope (50–80mm aperture) using rings, with adjustable positioning along the bar. Ideal for adding a guide scope alongside your main imaging instrument.
Mounts two telescopes simultaneously on the counterweight bar, leaving the main telescope free. Run parallel observation sessions, imaging and guiding, or two independent instruments at once.
Most versatile for imagingPositions a single camera — including heavy telephoto lenses — anywhere along the counterweight bar. The adjustable mounting point lets you fine-tune balance without moving counterweights.
Combines telescope and camera attachment in one assembly, with independent balance adjustment for each. The most versatile configuration for astrophotographers running a scope and a camera simultaneously.
Most versatile overall| Counterweight shaft | 18mm & 20mm (standard) |
| Custom shaft sizes | Available on request |
| Telescope aperture (One-T) | 50–80mm |
| Dovetail variant (Swivel) | Vixen standard |
| Declination adjustment | ±9° |
| Elevation adjustment | ±6° |
| Bar positioning | Adjustable along full bar length |
| Configuration change | Via accessories, no full replacement |
All DuoScope configurations available from the European store.
eu.lunaticoastro.com →Worldwide shipping from the international store.
shop.lunaticoastro.com →Assembly and use guide for the DuoScope Swivel and VX models. In Spanish.
Download PDF →Assembly and use guide for the telescope ring and mixed configurations. In Spanish.
Download PDF →