Tube Rings & Mounting Rings

Rings and scope rings: The stable base for your optical tube

Tube rings form the physical connection between your telescope’s optical tube (OTA) and the mount. Without a set of precisely fitting rings, it is impossible to mount a telescope securely and vibration-free on a dovetail or rail. At Telescoop.nl, we supply tube rings and Telescope ring from high-quality materials such as cast or CNC-milled aluminum, sourced from specialists like Bresser, Explore Scientific and Omegon.

When replacing an existing set or building a new configuration for astrophotography, the rings must enclose the tube without deforming it, while immediately transmitting any mount movement to the optics.

Why the correct passing of Telescope ring crucial is

A telescope tube can vary in diameter, even in models with the same aperture. A fraction of a millimeter of play can lead to unwanted movements when tracking stars. Our selection of Bresser and Explore Scientific is focused on the following technical standards:

• Exact inside diameter: Mounting rings are specified based on the outer diameter of the telescope tube. We carry sizes for the most common systems, from compact 80mm refractors to large 300mm Newtonian telescopes.

• Protective lining: The inside of our rings of Omegon and Explore Scientific is often equipped with felt or a soft plastic layer. This prevents scratches on your telescope's paint and ensures even pressure distribution over the tube.

• Hinge system Most of the rings in our assortment feature a robust hinge and a large thumb screw. This allows you to easily open the rings and rotate the telescope to the desired position (for example, to get the eyepiece at a more comfortable angle).

Assembly of accessories and finderscope rings

You'll find this specific hardware under telescope-accessories/mountings/mounting-accessories/plates-rails-and-tube-rings/tube-rings-and-telescope-rings/.

Within the broader category plates, rails, and tube rings These rings are the modular building blocks of your setup. At Telescoop.nl, we understand that a ring set often has to do more than just hold the tube in place:

1. Piggyback photography Many tube rings from Bresser are equipped with a standard 1/4" camera screw on top. This allows you to attach a DSLR camera directly on top of the telescope for wide-field shots.

2. Guiding Rings In addition to fixed rings, we also offer adjustable telescope rings with set screws. These are used to align a smaller guide scope relative to the main telescope.

3. Dovetail Integration: The underside of the rings is equipped with standardized threading (often M6 or 1/4"), allowing them to fit directly onto Vixen or Losmandy style rails Explore Scientific and Omegon.

What do you look for when purchasing?

When choosing new telescope rings, three technical parameters are decisive:

• The outer diameter of your OTA: Measure the circumference or diameter of your telescope tube accurately. The specified size of the ring should match the actual outer diameter of the tube, not the optical aperture of the telescope.

• Stiffness vs. Weight For mobile setups, lightweight aluminum rings Bresser ideal. For heavy astrophotography equipment, we recommend the thicker, CNC-machined variants of Explore Scientific to exclude any form of flexion.

• Pattern and flat sides: Check if the rings on the top and bottom have flat mounting surfaces. This is essential for a stable connection to your dovetail.

Advice for your astro rig

Do you want to know which ring diameter fits your specific Newtonian telescope? Omegon, or are you looking for a set of rings Explore Scientific With additional mounting points for a tracking camera? At Telescoop.nl, we have the data to determine the right fit. We ensure that your optics are securely mounted so that the mount can function without mechanical deviations.