page contents

Fornax 150/100 inc MC3 Controller 100/150kg Load

Fornax 150/100 inc MC3 Controller 100/150kg Load

can be shipped within 45-60 days

Price includes VAT, plus delivery

The Fornax F150/100 is German Equatorial type mount. It is intended for fixed observatory use with large telescopes and has a load capacity of 100kg for imaging and up to 150kg for observational use (excluding counterweights). The mount is composed of aluminium alloycast aluminium, bronze and stainless steel construction and overall build quality is of a standard expected from a performance mount such as this.

The periodic error of the F150/100 is typically < +/- 6 arc seconds. This can be improved to a very low +/- 0.5 seconds when fitted with the optional Telescope Drive Master Encoder.

Drive Control

The Fornax F150/100 is supplied with the MC3 Drive Controller and Ursa Minor Pro Planetarium Software. This is responsible for controlling the stepper motors for slewing, positioning and tracking.

The Ursa Minor itself is given commands via either a computer running planetarium software or via a hand held remote control. For the latter, Ursa Minor offer their own handset, however the controller is also compatible with the popular SkyWatcher SynScan controller.

Apart from the initial configuration of the controller, use of a handset does not require any involvement from a PC to operate the mount.

As standard the Ursa Minor is compatible with ASCOM and can therefore interface to any other software or device that supports this standard. Autoguiding is fully supported.

At Astrograph we supply the F150/100 WITH 3 x 10kg Counterwieghts. These are also available separatley at a cost of £199.00 each

General Specifications

Weight 50 kg
Dimensions 320x420x420mm
Axis Diameter 100mm Eloxed Aluminium Alloy
Ball Bearing Diameter 150 mm (precision tapered roller bearings in X arrangement)
Worm Gear Diameter 292.5 mm, 1.5 Modul, Bronze, 192 cogs
Worm Diameter 33 mm, hardened, ground, stainless steel (KO13)
Stepper Motors Bipolar 200 steps/rotation , 1,3 Nm (400 step for F52)
Periodic Error < +/-6 arc,  (Using TDM  < +/-0.5 arc)
Couterweight Shaft 42.7mm( 1'' KO33 pipe ) x 570 mm
Max Load 100kg


Browse this category: Motorised Mounts