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76951 AXJ PF-L Equatorial Mount

AXJ MountHigh performance observatory-class equatorial mount

The AXJ mount is the latest generation of Vixen’s renowned Atlux equatorial mount series. The AXJ has been engineered to cope with the demands of the most advanced astro photographer. As digital camera resolutions have increased, so has the need for more accuracy and stability in an equatorial mount. The use of multiple high precision bearings, worm gears and drive components mean the AXJ is perfect for long exposure and very high resolution astro photography. It is smaller but still has the same superior build quality as the AXD2.

The AXJ is an evolution of the SXP mount which is the pinnacle of the Vixen Sphinx series mounts and sits between the AXD and SXP in terms of load capacity, with a loading weight of 22kg. It is also quieter and has highed precision tracking with almost no backlash thanks to a belt-drive mechanism in both the RA and DEC axes.

The Vixen AXJ mount comes with Star Book Ten controller for manual or computer controlled observation or astrophotography.

The mount is compatible with the optional SXG-series tripod and half-pillar. It is possible to use the AXD-series tripod and pillar using the optional AXJ-TR102 conversion adapter set.

Portable but stable
Lightweight but strong A7075 aluminum alloy is used for the construction of the RA and DEC axes on the AXJ mount. This material is stronger than titanium but is also 38% lighter. This helps to keep the overall weight of the mount head down to a transportable 17.4kg (without counterweights).

Extremely smooth slewing and tracking
Vixen has used a belt-drive mechanism for the first time in an equatorial mount and this eliminates backlash and reduces noise to a minimum. The tracking accuracy of the AXJ is ±4 arc second and is maintained by the integrated V-PEC (Vixen permanent Periodic Error Correction). This error correction is factory calibrated for each individual mount. In addition, user programmable PEC can be applied separately to both RA and DEC axes to further improve tracking performance.

A total of 14 bearings are used in the mount’s moving parts to help with the smoothness and accuracy of tracking.

Strength In Numbers
The RA axis shaft is 40mm in diameter to offer higher payload capability. The brass RA worm gear has 225 teeth to deliver better tracking accuracy. The DEC axis is also 40mm in diameter and has worm wheel gears with 192 teeth.

On screen ‘moon map’ function
The latest version of the Star Book TEN firmware includes a ‘moon map’ function. This allows the user to call up an on-screen map of the visible portion of the moon. Major sites of interest on the moon’s surface are highlighted and can be selected for the mount’s GO-TO function.

Polar Scope PF-LPolar Scope PF-L Polar axis scope
The polar scope PF-L with built-in dark field illuminator is supplied as standard with the AXJ mount and is mounted in the RA body. Vixen’s excellent reticule design and precise RA axis/polar scope alignment allow for precision polar alignment. No hour angle setting is required, making set up quick and simple.


Specifications AXJ PF-L Mount
R.A. slowmotion axis 225-tooth full circle micro-movement gear, 114.5mm diameter, brass wheel
DEC slowmotion axis 192-tooth full circle micro-movement gear, 98mm diameter, brass wheel
Worm gears 15.5mm diameter, brass
R.A. & DEC axes 40mm diameter, carbon steel
Number of bearings 14 pieces
Counterweight bar 25mm in diameter, retractable
Polar axis scope Built-in 5x20mm scope, FOV 8°, bubble level, illuminated reticle, setting accuracy within 3 minutes
Drive motor Belt-driven axes with stepper motors with 300PPS
Slewing Maximum 800x sidereal rate
Maximum payload 22kg (48.5lb) (550kgs/cm torque load)
Power source DC12V 0.45 ~ 2.5A depending on loading weight
Dimensions 420 x 466 x 138mm
Weight 17.4kg (38.4lb) without counterweight
Counterweight 3.5kg (7.7lb) x 1pc, 1.5kg (3.3lb) x 1pc


Optional Parts & Accessories

76916 AXD-TR102 Tripod (with use of 76953 AXJ-TR102 Conversion Adapter Set)
76915 AXD Half Pillar
76917 AXD P85 Pillar
76918 AXD Large Accessory Plate
76912 AXD Counterweight 1.5kg (3.3lb)
76913 AXD Counterweight 3.5kg (7.7lb)
76914 AXD Counterweight 7.0kg (15.4lb)
75301 Advance Unit


Please note: The AXJ Mount is available to special order only