PrimaLuceLab PLUS Tube Rings

These rings are designed specifically for the PrimaLuceLab PLUS system. While they can technically mount to other equipment, they are optimized for the PLUS ecosystem, so you should verify that your telescope's outer diameter is exactly 105mm before purchasing.

The PLUS system uses a standardized hole pattern that allows you to securely bolt accessories like guide scopes, handles, or dovetail plates directly to the rings. This creates a rigid, modular setup that eliminates the flexure often found with clamp-on mounting solutions.

Yes, they are ideal for astrophotography. The CNC-machined aluminum construction provides the high rigidity needed to keep your imaging train stable, and the multiple mounting points allow you to easily attach guide rings or other necessary hardware.

The rings include the essential mounting hardware for the rings themselves, but you may need specific screws or bolts depending on the accessories you plan to attach to the threaded holes. It is a good idea to check the thread specifications of your specific accessories.

The set of two rings weighs 1.32 lbs (approx. 0.6 kg). This is a relatively lightweight addition considering the structural rigidity they provide for your optical tube.