Farpoint 14 Inch 57.3 Series Universal Dovetail Plate (Original Radian Bar)

Product Overview

This is the original Radian bar — the 14″ lightweight universal D-size dovetail, now sold direct by the manufacturer.

If you've been hunting for the Radian Telescopes 14″ lightweight universal D-style dovetail bar , you've found it — and the people who actually made it. This 14″ 57.3 Series universal dovetail bar carries a variety of mounting hole options for attaching telescope optical tubes, scope rings, and accessories to heavy-duty equatorial mounts, with a light-weighted design that keeps payload capacity for your optics and imaging train instead of your hardware. D-size (Losmandy-style). Machined of sturdy aluminum with a black anodized finish. CNC-machined in the USA.

Who Is This Product Best For?

This product is designed for telescope owners and astrophotographers who use Losmandy-style (D-size) dovetail hardware. It is an ideal choice if you need a precision-machined, reliable mounting solution that integrates with the Losmandy-style (D-size) ecosystem of plates, saddles, and accessories.

Why Choose This Product?

• Precision machined: CNC-machined and anodized for a tight, secure fit on Losmandy-style (D-size) hardware.
• Built to last: Aircraft-grade aluminum construction resists flexing under load and holds alignment.
• Trusted brand: Farpoint Astro is a respected name in telescope mounting hardware, made in the USA.

Recommended Uses

Use this telescope dovetail plate for visual observing and astrophotography setups that rely on the Losmandy-style (D-size) dovetail standard, including mounting optical tubes, guide scopes, cameras, and accessories.

Compatibility and Accessory Notes

Key compatibility and fit details:

• Bar length: 14″
• Series: 57.3 Series — originally sold as the Radian lightweight universal D-style dovetail bar
• Bar standard: D-size (Losmandy-style)
• Design: Light-weighted universal bar — variety of mounting hole options (see product drawing)
• Finish: Black anodized aluminum
• Construction: CNC-machined in the USA

Important Limitations

This is a Losmandy-style (D-size) component and is not compatible with V-size (Vixen-style) hardware unless an adapter is used. Verify your telescope's mounting pattern and your mount's saddle width before purchasing.

Frequently Asked Questions

Is this the Radian dovetail bar?
Yes. Farpoint manufactured these bars for OPT (Oceanside Photo & Telescope), who sold them as the Radian Telescopes lightweight universal D-style dovetail bar. With OPT now closed, we sell the same bar direct under the 57.3 Series name. This 14″ is the original Radian length.

Need a different length?
We expanded the Radian design into a family: the 57.3 Series 21.5″ bar for long tubes and maximum balance range, plus a compact 6″ version.

What mounts will this work with?
Any mount with a D-size (Losmandy-style) saddle. Mount still has a small Vixen saddle? Our D-size saddles and conversions upgrade it.

Our Recommendation

If you run a Losmandy-style (D-size) setup, the Farpoint 14 Inch 57.3 Series Universal Dovetail Plate (Original Radian Bar) is a dependable, precision choice that will integrate cleanly with the rest of your Farpoint dovetail system. Ontario Telescope and Accessories stocks the full Farpoint lineup to help you build a complete, matched mounting solution.