Astronomy Specialist




Testar Australia is a technical assistant dealer for 10 Micron. Our staff has been trained at the 10 Micron factory to provide assistance, repairs and maintenance on their products.

Since ancient times, the lever principle has been utilized to solve problems related to lifting big loads with minimum effort and in safe conditions. Leonardo BM100, the 10Micron mount for heavy duty binoculars and spotting scopes, optimizes this principle, with the clear aim to provide all Astro and Terrestrial observers with a reliable optical platform and a perfect aiming and targeting system. The Leonardo BM100 mount is able to provide exceptionally sturdy instrument support, totally free of vibrations and to ensure prolonged observation in total comfort.
The extreme variability of the Leonardo-mechanical system enables you to observe any astronomical or terrestrial objects by utilizing it's 4-axis pointing system. Friction adjustment hand-knobs in elevation and horizontal rotation enable the user to precisely match the preload of the parallelogram to retain a fluid-movement with varying instrument weights – and to fine-tune all mounts-movements to effectively compensate for accidental shock or sudden intense wind gusts.

Note: the included 3kg counterweight is used to balance just the arm itself - you will need additional counterweights at a ratio of 1:2.5 the weight of the binoculars, for example 2kg binoculars would need 5kg of counterweights (in addition to the included 3kg counterweight for the arm).




Leonardo - BM100 L (Bino Mount 100)




Designed and manufactured entirely in Italy at the 10Micron headquarters – based on an idea of Roberto Volonté


Anodized light-alloy aluminum, all axes equipped with stainless steel/bronze bearings

Mount weight

13 kg (without tripod or accessories)


3 kg or 6 kg

Counterweight shaft

Stainless steel - diam. 30 mm / length 500 mm

Load capacity

Max. instrument load 13.5 kg


Suitable for binoculars / spotting scopes from 50 to 150 mm in diameter / compact SC-telescope-OTA up to 8”

Max. instrument height 200 cm, at tripod extension 100 cm (perfect for observation in upright/standing position )
Min. instrument height

50 cm, at tripod extension 100 cm (perfect for observations from a lounger/folding chair)

Pointing system

Passive 3D pointing with adjustable parallelogram, consisting of four anti-torsion rods of 100 cm long

Elevation range

-35 °/ + 53 ° below/above the horizon

Parallelogram rotation

360 ° in azimuth
Tilt of instrument platform +/- 90 ° in elevation
Aux azimuth tilt (4th axis) +/- 15 ° to left and right

Safety lock feature

Leonardo BM -100 is equipped with a quick safety lock that acts simultaneously onto both sides of the parallelogram arms. Actuating one plunger (w. dual locking pin) will securely lock the parallelogram in horizontal position for mounting all optical instruments onto the instrument platform in total security

Use & movement

"Soft Move" fluid friction for effortless positioning in all directions. Custom friction adjustment in Azimuth and Elevation via Soft-Touch hand-knobs of large size, best suited even for winter gloves; for all other movements the axes are factory preloaded and steel-spring assisted

Optical instrument lock

Standard: two locking screws with interchangeable thread 1 /4 " or 3/8 " (world photo standards).
Optional: 44 mm dovetail clamp (Vixen/Celestron/Skywatcher compatible)

Tripod base adapter Specifically designed for compatibility with 10Micron and Geoptik series tripods. The Leonardo BM100 base plate can be mounted to any heavy duty tripod suitable for astronomical observations by utilizing the included adapter flange with pre-drilled holes

Available colours

Aluminum surfaces are silk-glossy durable anodized. Standard color is black.
10Micron proprietary colours - red or blue are available on special order (enquire for delivery time)
Standard package Leonardo BM-100 standard package includes a stainless steel 3 kg counterweight, stainless steel counterweight shaft diam. 30 x 500 mm, two locking screws with “1/4 " and 3 /8" photo-thread, a universal flange-tripod adapter, a user manual and a sturdy cardboard transport box with molded foam

Optional accessories

Cordura carrying bag with handles; the molded foam of the transport box can be re-used; 3 kg / 6 kg counterweights; 44 mm dovetail clamp – Vixen GP standard.




  • Leonardo Bino Mount BM-100
  • 3 kg counterweight
  • 30 x 500 mm counterweight shaft stainless steel
  • Two locking screws with 1/4″ and 3 /8″ photo-thread
  • Universal flange-tripod adapter
  • User manual
  • Sturdy cardboard transport box with molded foam
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