What are the Orion Optics UK Radius Blocks for a 150mm scope used for?
These radius blocks are designed to create a solid, flush mounting surface on the curved optical tube of a 150mm telescope. They are used to attach flat-bottomed accessories, such as dovetail bars or guide scope rings, without stressing or damaging the tube.
How many Orion Optics UK 150mm Radius Blocks do I need?
You will need at least two radius blocks to mount a typical accessory like a dovetail bar. For longer or heavier accessories, using three or more blocks can provide additional stability. They are sold individually, allowing you to buy the exact number required.
Are these 150mm radius blocks sold in pairs?
No, the Orion Optics UK 150mm Radius Blocks are sold individually. This allows you to purchase the exact number you need for your specific mounting project.
Will these radius blocks fit any 150mm telescope?
These blocks are machined for the specific curvature of Orion Optics UK's 150mm optical tubes. While they may fit other 150mm telescopes with a similar outer tube diameter, a perfect flush fit is only guaranteed on the intended models.
Can I use these Orion Optics UK blocks to mount a dovetail bar to my 150mm Newtonian?
Yes, this is their primary purpose. By placing two or more blocks between the telescope tube and the dovetail bar, you ensure the bar sits securely on the curved surface, providing a rigid connection for mounting the telescope without flexure.
What is the benefit of using a radius block instead of mounting a bar directly to my 150mm tube?
Mounting a flat bar directly to a curved tube creates stress points at the bolts and a gap along the bar's length, leading to instability and potential tube damage. A radius block fills this gap, distributing the load evenly and creating a much more secure and stable mechanical connection.
