Takahashi TOA-130NS Triplet APO f/7.7

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 NS version of the TOA-130 is equipped with a conventional 69 mm diameter rack-and-pinion focuser and a retractable dew shield. A balancing ring is provided to compensate for the weight of the lens cell. In photography, the mounting of the optional TOA-35 FL field corrector offers a consistent image circle of 40 mm. There is also a focal reducer (TOA-35 RD) with a coefficient of 0.7x.

Technical Specifications

Takahashi TOA-130NS refractor

CHARACTERISTIC	TAKAHASHI TOA-130NS 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	130 mm
AT PRIME FOCUS
Focal length	1000 mm
Focal ratio	F/7.7
Metal back distance	222.5 mm
WITH TOA-35FL FIELD CORRECTOR
Focal length	980 mm
Focal ratio	F/7.5
Image circle diameter	40 mm
metal back distance	117.5 mm
WITH TOA-35RD FOCAL REDUCER
Focal length	698 mm
Focal ratio	F/5.4
Image circle diameter	44 mm
Metal back distance	62.5 mm
WITH EXT-ED1.5X FOCAL EXTENDER
Focal length	1500 mm
Focal ratio	F/11.5
Image circle diameter	44 mm
Metal back distance	117.5 mm

Takahashi TOA-130NS refractor

CHARACTERISTIC	TAKAHASHI TOA-130NS REFRACTOR
Length of the optical tube	1145 mm (1012 mm with retracted dew shield)
Diameter of the optical tube	156 mm
Diameter of the dew shield	180 mm
Weight	10.5 kg
Focuser	Rack-and-pinion 2,7''