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Takahashi Epsilon-130D: 130 mm F/D 3.3 astrograph, tube only

A compact astrograph for large nebulae and star fields: the Epsilon-130D features a 130 mm aperture, a 430 mm focal length at F/D 3.3, and a corrected 44 mm image circle. Integrated corrector, rotating framing collar, and TEK13010 tube-only version.

CHF 2'228.46incl. Swiss VAT

Part Number TEK13010

Will be ordered for you
Delivery time: 5 to 7 business days
Estimated shipping: Between November 23 and 24, 2026

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Product description

Product description

A Compact Astrograph for Wide Fields

The Epsilon-130D combines a 130-mm diameter with a 430-mm focal length and an F/D ratio of 3.3. This short focal length is well-suited for photographing extensive nebulae and wide-field star fields. Part number TEK13010 refers to the optical tube only; it must be paired with your own mount and imaging equipment.

A field corrected for photography

The hyperbolic primary mirror works with a plane secondary mirror and a corrector integrated into the rack. This modified hyperbolic Newtonian design provides a corrected image circle of 44 mm. The corrector is part of the tube’s optical system; the photographic adapters are selected based on the camera or body being used.

Set up the camera rig

The 56.2 mm backfocus defines the working distance to be maintained according to the Takahashi scheme. The rings, filter holder, and housing must be taken into account in this calculation, as well as in the available aperture diameter for the sensor. The wide-field T rings and the 1.5× Epsilon extender specific to the 130D are separate options from the native configuration.

Framing, Adjustment, and Transport

The rotating collar integrated into the rack allows you to adjust the field of view. The reinforced spider supports the secondary mirror and minimizes flexing. Markings on both mirrors allow you to check collimation during the day using the appropriate Takahashi tools, following the procedure for the 130D.

Selecting the Correct Size for the Fastener and Mount

The tube is 460 mm long and 166 mm in diameter, with a mass of 4.9 kg. Its front end has a diameter of 188 mm. To select the mount and balance the setup, add the mass of the clamps and the camera assembly to that of the tube.

Accessories for Your System

  • Check the collimation: combine the cross-linked tube TKA00442 at the’TKA00441 collimation eyepiece. The Epsilon-130D diagram shows visual adapter #10, tube #19, ring #14, 31.75 mm eyepiece holder #46, and then collimation eyepiece #29. Remove the corrector for this adjustment, then reinstall it according to the manual before imaging.
  • Secure the tube: visit 166WS TKA69420S Double Clamps are designed for the Epsilon-130D. The top plate is included in this set; the bottom plate or dovetail must be purchased separately. Takahashi recommends the M TMP02200 plate. Any other interface must conform to the hole patterns and center distances of the clamps and the mount.

Package Contents and Setup

Epsilon-130D optical tube (TEK13010) with built-in corrector. The mount, camera, clamps and their mounts, T-ring, and extender must be selected separately. The collimation tools listed above are optional.

Takahashi TEK13010 Official Spec Sheet ; Takahashi 2025 Catalog, PDF page 33.

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Frequently asked questions

Frequently asked questions

What can you see with the Takahashi Epsilon-130D?

With a 130 mm aperture at f/3.3 and a focal length of 430 mm, it is primarily an astrophotography instrument: when paired with a camera, it is designed to photograph large nebulae, the Milky Way, and massive clusters across a very wide field of view.

Is it easy to carry?

Yes, it's a lightweight instrument: the tube weighs about 4.9 kg and is about 46 cm long.

Should we aim it at him?

Yes, just like any wide-aperture Newtonian—and with precision, because astrophotography at f/3.3 leaves little room for error. Takahashi offers the Takahashi TKA00442 collimation tube.

Can we take pictures?

Yes, that’s what it’s designed for: it mounts on a motorized equatorial mount (not included) with an astro camera or a regular camera. With an aperture of f/3.3, it gathers light very quickly, so exposure times remain short. With a tube weighing approximately 4.9 kg (without accessories), choose a mount with a load capacity that leaves some margin.

Technical specifications

Technical specifications

Technical specifications

Optical type
Newton
Diameter
130 mm
Focal length
430 mm
Focal Ratio (f/D)
f/3.3
Separating power
0.89″
Lens holder
Rack with Rotator (CAA)
Backfocus
56.2 mm (metal back)
Illuminated Field
44 mm
Corrector / Reducer Available
Yes
Tube length
46 cm
Tube weight
4.9 kg
Uses
Deep Sky, Astrophotography
Recommended Products (8)

Recommended Products (8)

How to Care for Your Instrument

Here are a few accessories we've selected for this model, depending on your needs.

Takahashi TMP02400: 180 × 120 × 12 mm plate

Takahashi Flat TMP02400 bottom plate, shown by the manufacturer with an Epsilon-130D and 166WS clamps on an EM-11. The plate and clamps are separate; check the mounting, hardware, load, and balance. This is not a Vixen tail.

CHF 109.55
Documentation

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