PrimaLuceLab OnAxisLock2 – 50.8 to 31.8 mm Adapter

PrimaLuceLab OnAxisLock2 – 50.8 to 31.8 mm Adapter

The OnAxisLock2 31.8 mm accessory mount secures an eyepiece, a right-angle prism, or a compatible slide-on camera by manually rotating its outer ring. It uses two compression rings instead of individual screws.

Its telescope-side interface is a standard 50.8 mm slip-on mount. The specified optical thickness is 19 mm. The diameter of the accessory received is 31.8 mm; this dimension should be distinguished from that of the eyepiece holder connection.

The two rings distribute the clamping force evenly around the circumference of the focuser. This design is intended to minimize pressure marks and maintain the alignment of the accessory within the optical train, whether for observation or photography. It does not replace the tilt adjustment of a sensor if another component of the mount is misaligned.

The external knurling can be operated without tools, even while wearing gloves. This product description applies only to the accessory mount; cameras, eyepieces, and right-angle prisms are examples of its uses. No maximum load capacity is specified.

Technical specifications

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