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fornax 52 Heavy Duty Equatorial Mount
fornax 52 Heavy Duty Equatorial Mount
fornax 52 Heavy Duty Equatorial Mount

fornax 52 Heavy Duty Equatorial Mount

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Fornax 52 Heavy Duty German Equatorial Telescope Mount plus MC5 Motor Controller plus Ursa Minor Pro Planetarium and Telescope Control Software

  • Max recommended visual load (without the weight of counterweights): appr. 50kg
  • Max recommended photographic load (without the weight of counterweights): appr. 40kg

Optionally available: Extremely high quality / high precision Heidenhain ECN 125 2048 5XS08-c4 R absolute encoders on both axis.

This is the latest incarnation of the former Fornax 51 mount. The Fornax 52 comes with much strengthened and improved wormbox that makes it an even more precise mount. The new housing of the worm drive is stronger and it has got an extra unit that holds it in exact position, eliminating any sideway movement that could have ocured in earlier versions when changing direction under heavy load.

Designed and manufactured in the European Union, Fornax Telescope Mounts are a series of German Equatorial mounts for precise positioning and tracking large telescopes. These are available in various payload capacities: 50kg, 100kg, 150kg and 200kg (the latter one is coming soon). There is also a very compact, mobile version called Fornax 10 LighTrack that serves as a lightweight astro photo tracking solution.

The Fornax 52 has got a load capacity of up to 45-50kg. Although there are examples of use of even heavier telescopes, the recommended maximum load is 45kg - 50kg for this telescope mount.

There are similar mounts on the market with practically the same theoretical payload capacity when used for visual observations, but much lower capacity when used for astro photography.

This mount has been designed to provide the same precision up to its maximum capacity and it can be used for astro photography up to its maximum payload if correctly balanced and aligned.

The mechanism of this extremely sturdy mount is being made of aluminium alloy, cast aluminium, bronze and stainless steel. The worm and the electric motor are located in an enclosed, sealed space (waterproof and dust-proof), making it less sensitive to dust and temperature fluctuations, and is practically maintenance free.

Thanks to the ingenious solution of the inner drive mechanism this telescope mount doesn't suffer from any backlash.

Typical periodic error (when unguided) is less than +/- 6 arc seconds (one period on the worm gear is 7.5 minutes long!) When using a TDM (Telescope Drive Master), this can be reduced to below +/-0.5 arc seconds. (TDM is an alternative solution to guiding.)

When using auto guiding, the mount reacts immediately, so corrections are very fast and completely free of play. This is the ultimate solution for astrophotography with a high quality/price ratio!

Delivery Information:
Please contact us to discuss the possible delivery options. The delivery fee and time will depend on your location (e.g. U.K. or overseas) as well as your requirements.



Specifications: fornax 52 Heavy Duty Equatorial Mount

  • Weight: 35kg
  • Recommended telescope weight: 40kg (max. 50kg)
  • Overall dimensions: 250 x 350 x 350mm
  • Shaft diameter: 60mm, anodised aluminium alloy
  • Bearings: diameter 95mm, high precision tapered roller bearings in X layout
  • Gear: diameter 194mm, 1 modul, bronze, 192 teeth
  • Worm: diameter 22mm, multiple thread, grinded, hardened, corrosion proof steel (KO13)
  • Periodic Error: < +/- 8 arc seconds
  • Periodic Error (with TDM): < +/- 0.5 arc seconds
  • Stepper Motors: 200-phase step / rev., 1.3Nm
  • Voltage and Current: 12V DC, 3.5A peak power consumption at max. load
  • Counterweight holder shaft: diameter: 33.7mm (1" KO33 tube) and length 470mm
  • Step-resolution: 0.5 arc seconds / step
  • Maximum speed: 4 degrees / second
  • Optional encoders: Heidenhain ECN 125 2048 5XS08-c4 R absolute encoders on both axis.

What's in the Box

What's in the Box: fornax 52 Heavy Duty Equatorial Mount

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