Takahashi TOA-150B Triplet APO f/7.3

The Triplet Ortho-Apochromat concept of the TOA refractors makes it possible to combine sharpness and extraordinary contrast. This unique optical formula, based on a highly air-spaced ED triplet, has the advantage of completely eliminating spherical aberration while having the best chromatic correction in the Takahashi telescopes range. TOA excels in both high planetary resolution and deep sky imaging, fully exploiting the capabilities of cameras with the largest sensors.

The TOA-150B is equipped with an oversized 102 mm (4") rack-and-pinion focuser (with 1/7 microfocuser), a CAA (Camera Angle Adjuster) ring for photographic framing, an FQR-1 base for 7x50 finder scope and a retractable dew shield. It can be combined with the TOA-35 RD 0.7x field flattener but also the 67 FL super-corrector offering an incredible 92 mm image circle.

The TOA-150B is the flagship of the Takahashi refractors. It is resolutely turned towards imaging. It supports, without mechanical constraints, the heaviest photo setups including large sensor CCD cameras.

Technical Specifications

Takahashi TOA-150B refractor

CHARACTERISTIC	TAKAHASHI TOA-150B REFRACTOR
Optical design	ED Triplet Ortho Apochromat
Lens cell	Highly air-spaced triplet. 3 lenses/3 groups. 2 x S-FPL53 ED lenses
Coatings	Hard multicoatings
Diameter	150 mm
AT PRIME FOCUS
Focal length	1100 mm
Focal ratio	F/7.3
Metal back distance	275 mm
WITH TOA-35FL FIELD CORRECTOR
Focal length	1080 mm
Focal ratio	F/7.2
Image circle diameter	40 mm
Metal back distance	117.5 mm
WITH 67FL FIELD CORRECTOR
Focal length	1090 mm
Focal ratio	F/7.3
Image circle diameter	90 mm
Metal back distance	106.2 mm
WITH TOA-35RD FOCAL REDUCER
Focal length	775 mm
Focal ratio	F/5.2
Image circle diameter	44 mm
Metal back distance	62.5 mm
WITH EX ED1.5X FOCAL EXTENDER
Focal length	1650 mm
Focal ratio	F/11
Image circle diameter	44 mm
Metal back distance	117.5 mm

Takahashi TOA-150B refractor

CHARACTERISTIC	TAKAHASHI TOA-150B REFRACTOR
Length of the optical tube	1270 mm (1110 mm with retracted dew shield)
Diameter of the optical tube	179 mm
Diameter of the dew shield	206 mm
Weight	15.2 kg
Focuser	4'' (112 mm) Rack-and-pinion with microfocuser 1/7