Optical tube Takahashi TOA-150B (OTA) tube only with adapter 50.8/31.75

The Triplet Ortho-Apochromat concept of TOA binoculars combines outstanding sharpness and contrast. This unique optical formula, based on a high air-gap ED triplet, has the advantage of completely eliminating spherical aberration, while offering the best chromatic correction in the binocular range Takahashi. The TOA excels in both high planetary resolution and deep sky imaging, taking full advantage of the capabilities of cameras with the largest sensors.

The TOA-150B is equipped with an oversized 102 mm (4") rack with 1/7 multiplied focus, a CAA (Camera Angle Adjuster) rotating collar for photographic framing, and a retractable demister shield. It can be combined with the TOA-35 RD 0.7x reducer, but also with the TOA-645FL supercorrector, which offers a 60 mm image circle.

The TOA-150B, flagship of the telescopes Takahashi, is resolutely oriented to imaging. It supports, without mechanical restrictions, the heaviest photographic mounts, including CCD cameras with large sensors.

Features Telescope Takahashi TOA-150B

Triplet ED Apochromatic Objective

Large air-gap objective mount. 3 lenses/3 groups. 2 ED glass lenses S-FPL53

Hard multi-coating coatings

Useful diameter 150 mm

At native focus

Focal length 1100 mm

Relative aperture F/D 7.3

Backfocus 275 mm

With field corrector TOA-35FL

Focal length 1080 mm

Relative aperture F/D 7.2

Diameter of the corrected image circle 40 mm

Backfocus 117.5 mm

With the super field corrector TOA-645FL

Focal length 1085 mm

Relative aperture F/D 7.2

Corrected image circle diameter 60 mm

Backfocus 56.2 mm

With focal length reducer TOA-35RD

Focal length 775 mm

Relative aperture F/D 5.2

Diameter of corrected image circle 44 mm

Backfocus 62.5 mm

With the EX extender ED1.5X

Focal length 1650 mm

Relative aperture F/D 11

Diameter of the corrected image circle 44 mm

Backfocus 117.5 mm

Mechanical characteristics

Telescope Feature Telescope Takahashi TOA-150B

Tube length 1270 mm (1110 mm with mist shield retracted)

Tube diameter 179 mm

Diameter of mist shield 206 mm

Weight 15.2 kg

4.0'' (102 mm) Cremaillera focus with 1/7" (102 mm) micro focuser

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Telescope focal point diagram Takahashi TOA-150B at focus

Diagram of the focus point of the telescope Takahashi TOA-150B with the TOA-35FL field corrector

Diagram of the focus of the telescope Takahashi TOA-150B with the TOA-35RD focal length reducer