PrimaLuceLab C120 Pier for Concrete Base
- 150 kg (330 lbs) Load Capacity
- 120 cm (47.2") Height
- 220mm Diameter Steel Construction
- M20 Precision Leveling System
- Modular Adapter System for Popular Mounts
The PrimaLuceLab C120 Pier for Concrete Base provides an observatory-grade foundation for large telescopes, supporting up to 150 kg of equipment. Standing 120 cm tall, its 220mm diameter tube is constructed from 4mm thick steel, creating a stable, space-saving platform that eliminates the flexure common with field tripods and prevents collisions during slews across the meridian.
Engineered for permanent installations, the C120 Pier replaces the instability of a portable tripod with the rigidity of a fixed column. The pier itself weighs 60 kg without an adapter, contributing to a low center of gravity that dampens vibrations instantly. The 4mm thick steel tube construction ensures that even heavy, long-focal-length instruments remain steady for critical long-exposure astrophotography. A durable powder-coat finish protects the steel from the elements inside your observatory.
Achieving perfect polar alignment starts with a perfectly level base. The C120 Pier's base plate features three pairs of holes set at 120° intervals for a stable, three-point connection to your concrete foundation. One set of through-holes is used to anchor the pier to threaded bars set in the concrete, while the second set of M20 threaded holes accepts the included leveling screws. This system allows you to make fine, independent adjustments to achieve a precise level before mounting your telescope.
The C120 Pier connects to your equatorial mount via a range of optional, interchangeable adapters. PrimaLuceLab offers pre-drilled adapters for popular mounts from Sky-Watcher (EQ6, EQ6-R, AZ-EQ6, EQ8), Celestron (CGEM), 10Micron (GM1000, GM2000, GM3000), and Software Bisque (Paramount MX). For custom applications or mounts without a dedicated adapter, a 300mm diameter blank aluminum plate is available, allowing you to drill your own mounting holes for a perfect fit.
The primary advantage is stability. The C120 Pier's fixed, rigid steel structure, with its 150 kg load capacity, eliminates the flexure, vibration, and risk of accidental bumps associated with tripod legs. It also offers a smaller footprint, providing more room to move around the telescope and preventing the optical tube from colliding with a tripod leg when pointed near the zenith.
The pier is leveled using the three supplied M20 screws. After loosely securing the pier to the anchor bolts in your concrete base, you thread the M20 screws into their designated holes in the base plate. By adjusting these screws, you can precisely level the top of the pier before tightening the main anchor nuts.
Yes. The pier requires a mount-specific adapter, which is sold separately. You would need to order the optional adapter specifically designed for the EQ6 / EQ6-R / AZ-EQ6 bolt pattern to connect your mount to the top of the C120 Pier.
The blank adapter is a 300mm diameter aluminum plate with pre-drilled holes to attach to the pier, but no holes for a mount. This allows users with custom, rare, or unsupported mounts to drill their own hole pattern, creating a custom adapter for their specific equipment.
Absolutely. A C14 and GM2000 mount are well within the 150 kg (330 lbs) load capacity of the C120 Pier. This combination is precisely what the pier is designed for, providing the rigid, vibration-free platform necessary for high-resolution, long-exposure astrophotography with large instruments.
You will need to construct a solid concrete foundation and embed threaded anchor bars (not included) according to the pier's base plate dimensions. The pier is then secured to these bars. PrimaLuceLab provides mechanical drawings to ensure you position the anchor bars correctly for a successful installation.
| Load Capacity | 150 kg |
| Height (with adapter) | 120 cm |
| Pier Weight (without adapter) | 60 kg |
| Material | Steel |
| Finish | Powder Coated |
| Tube Diameter | 220 mm |
| Tube Wall Thickness | 4 mm |
| Leveling System | 3x M20 Screws |
| Base Attachment | 3x through-holes for concrete anchor bolts |
| Blank Adapter Diameter | 300 mm |
| Blank Adapter Material | Aluminum |
| Available Options | Yes, No |
C120 Pier for Concrete Base
× 1
M20 Leveling Screws
× 3