Farpoint Dovetail System · Radian Bar Design
The Radian bar design in its most compact form — 6″ of light-weighted D-size dovetail.
This 6″ 57.3 Series universal dovetail bar is the shortest member of the family that began as the Radian lightweight universal D-style dovetail bar Farpoint manufactured for OPT. The same light-weighted design and mounting hole options, sized down for compact optical tubes, guide scope duty, and accessory mounting where a full-length bar is overkill. D-size (Losmandy-style). Machined of sturdy aluminum with a black anodized finish. CNC-machined in the USA.
From Radian Bar to 57.3 Series
Farpoint manufactured the original 14″ bars for OPT (Oceanside Photo & Telescope), who sold them under the Radian Telescopes brand. When OPT closed its doors, we continued the line under the 57.3 Series name — same tooling, same USA machining, sold direct from the manufacturer — and expanded the design into this compact 6″ length plus a long 21.5″ version.
Specifications
Bar length
6″
Series
57.3 Series — extended from the original Radian bar design
Bar standard
D-size (Losmandy-style)
Design
Light-weighted universal bar — mounting hole options
Finish
Black anodized aluminum
Construction
CNC-machined in the USA
Which Universal Bar?
Bar
Length
Holes
57.3 Series 6″This model
6″
Light-weighted Radian design
Check your hole pattern before ordering. Need mounting-hole locations and measurements? Email us for the product drawing, or to confirm fit with your tube and rings.
Frequently Asked Questions
Is this the Radian dovetail bar?
It's our compact extension of it. Farpoint manufactured the original 14″ bars for OPT (Oceanside Photo & Telescope), who sold them under the Radian Telescopes brand. With OPT now closed, we sell the line direct under the 57.3 Series name — and this 6″ brings the same design to the smallest rigs. The original length lives on as the 57.3 Series 14″ bar.
Why choose the compact 6″ length?
Small refractors, guide scope rigs, and accessory assemblies don't need 14″ of bar — the 6″ keeps the footprint and weight down while giving you a full D-size dovetail. Need more reach? Step up to the 14″ original Radian length or the 21.5″ bar.
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.
Building out a D-size dovetail rig?
Browse all universal bars, or start with the dovetail system guide.
Shop universal D-size bars Read the dovetail guide
You may also like
Recently viewed