180 mm PLUS support rings (PrimaLuceLab, SKU: PLLANSU180P ) are a pair of rigid clamps designed for tubes with a diameter of approximately 180 mm. The design compatible with the PLUS mechanical system facilitates the mounting of Vixen / Losmandy rails under the telescope and guides or other accessories above the tube, ensuring perfect alignment of the astrophotography set.

Key Features of the 180mm PLUS Rings

• Inner diameter 180 mm – suitable for tubes 179 – 181 mm
• M6 threads in the PLUS standard grid (55 mm and 20 mm spacing)
• hinge and knurled set screw – quick opening and closing in the field
• CNC milled 6061-T6 aluminum, hard anodized – high stiffness and corrosion resistance
• possibility of simultaneous installation of rails or guides under and above the tube

Set components

• two 180 mm PLUS support rings

Technical parameters

• Inner diameter: 180 mm
• mounting threads: 6 × M6 (PLUS standard)
• hole spacing: 55 mm (Losmandy) / 20 mm (Vixen)
• material: aluminum 6061-T6, anodized
• compatible tubes: telescopes Ø 179 – 181 mm
• manufacturer: PrimaLuceLab – Italy

The 180mm PLUS rings provide a stable, on-axis mount for medium-sized refractors or catadioptric telescopes, allowing you to easily expand your setup with additional accessories as part of the modular PrimaLuceLab PLUS system.