Takahashi Double Ring Tube Holder 166WS (Epsilon E-130D)

Product Overview

The 166WS is a double-ring tube holder for the Takahashi Epsilon E-130D, sized to a 166 mm tube diameter. Two rings carry the tube across a span rather than clamping it at a single point — the arrangement Takahashi uses for the Epsilon astrographs, whose short, wide tubes carry a camera at the prime focus.

Who It's For

This is a good match if you own an Epsilon E-130D and need Takahashi's own holder to carry it on a Takahashi mount.

Key Features & Design

• 166 mm bore: sized to the Epsilon E-130D tube diameter.
• Double-ring construction: two ring positions rather than one clamp point.
• Matched to the Epsilon series: Takahashi builds a separate holder for each Epsilon tube diameter.

Recommended Uses

Mounting the Epsilon E-130D to a Takahashi equatorial mount for fast wide-field deep-sky imaging.

Compatibility and Accessory Notes

Sized for the 166 mm tube diameter of the E-130D. The other Epsilon tubes take their own holders — the E-160ED uses a 204 mm holder and the E-180ED a 232 mm one. If you are matching a holder to a different Epsilon, tell us which and we will send the right one.

Good to Know Before You Order

Sized to one tube diameter: the 166 mm bore fits the E-130D and does not adjust to the other Epsilon models.

Frequently Asked Questions

Is it difficult to set up?

No — the rings open to seat the tube and close around it, and the assembly bolts to the mount.

What tube diameter does it fit?

166 mm — the Epsilon E-130D.

Will it fit my E-160ED or E-180ED?

No — those tubes are wider and take the 204 mm and 232 mm holders respectively. We stock those as well.

Bottom Line

A 166 mm double-ring holder for the Epsilon E-130D — Takahashi's own two-point mounting for that astrograph.