TOA-150B Refractor Telescope


TOA-150B Refractor Telescope

Regular price
$ 12,970.00
Sale price
$ 12,970.00
Unit price

This item is a Special Order from the Manufacturer

Special Order

Now Through December 31, get a FREE TOA 35 Flattener with a purchase of a TOA-130 or TOA-150.  Discount will be applied in cart and on checkout.


The TOA series is a member of Takahashi’s line of triplet refractors.  In the TOA design, three lens elements are used, with the front and rear constructed from ED glass.  The resulting system achieves a high level of apochromatic performance for both visual observation and imaging.  Takahashi engineers have a undertaken a complete redesign of the triplet system, completely eliminating spherical aberration while minimizing axial chromatic aberration in the visible light spectrum.

In typical apochromatic designs, the elimination of chromatic aberration is usually at the expense of increasing spherical aberration at various wavelengths.  However, with the TOA series, the focal shift across the entire visible spectrum from 436 nm up to 656 nm is less than +/- 0.01 mm.  This is less than 1/100 the aberration of a typical apochromatic design.


The TOA-150B is a 150 mm apochromatic f/7.3 refractor with a focal length of 1100 mm.  It features a retractable lens hood, a 4 inch rack and pinion focuser with a 7:1 fine focuser, and a 360 degree camera angle adjuster.  A complete line of flatteners, reducers and extenders are available, including the 67-series flattener, which provides a 90 mm imaging circle. 

A tube weight is standard to assist in balancing instrumentation or visual accessories.

Optical tube only.  Mount and tripod sold separately.




Part Number



150 mm



Limiting Magnitude


Light Gathering Power


Focal Length

1100 mm

Focal Ratio

m f/7.3

Optical Type

 Fluorite ED Triplet

Tube Diameter


Tube Length (With Lens hood retracted)

1270mm (1110mm)

Tube Weight


Recommended Finder


Metal Back Distance



Telescope Specifications 

TOA150B Visual System Chart

TOA150B Reducer System Chart

TOA150B Extender System Chart

TOA150B TOA Extender System Chart

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