Takahashi TSA-120 Refractor (TTK12010)

Name: Takahashi TSA-120 Refractor (TTK12010)
Brand: Takahashi
SKU: TAK-TTK12010
Price: 5384.25 CAD
Availability: InStock

by Takahashi

SKU TAK-TTK12010

Save $1,794.75

$7,179.00

$7,179.00 - $7,179.00

$7,179.00

$5,384.25

$5,384.25 - $5,384.25

$5,384.25

Quantity

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Takahashi TSA-120N Refractor

The TSA-120 is equipped with an air-spaced ED triplet apochromatic lens with 120 mm diameter (900 mm focal length and F/D 7.5), mounted in a 3-element barrel. The latter ensures good stability of the optomechanical chain in the face of usual transport constraints and significant variations in operating temperature. It has a retractable dew shield and the length of the tube does not exceed 990 mm for a moderate weight of 6.7 kg.

The lens has been designed to achieve a very high level of performance in observation and photography. The chromatic aberration in short wavelengths (blue and violet) is reduced by one third compared to the old FS-102/FS-128 with Fluorite lens. The Strehl ratio at optimal wavelengths of human vision is almost perfect, at 99.2%, equivalent to that of the TOA series.

The TSA-120 is therefore a lightweight, compact and economical refractor, whose performance is similar to that of the TOA, Takahashi's flagship models and recognized as among the best in the world.

The addition of the optional field corrector allows native focus imaging. The TOA-35 reducer (F/5.25) makes it more comfortable in deep sky photography. All assemblies meet the rigidity and flexibility requirements of new imaging devices, such as digital cameras and the latest generation of CCD cameras.

Technical Specifications

CHARACTERISTIC	TAKAHASHI TSA-120 REFRACTOR
Optical design	ED Triplet Super Apochromat
Lens cell	Air-spaced triplet. 3 lenses/3 groups. 1 S-FPL53 ED lens in the center
Coatings	Hard multicoatings
Diameter	120 mm
AT PRIME FOCUS
Focal length	900 mm
Focal ratio	F/7.5
Metal back distance	227.5 mm
WITH TOA-35FL FIELD CORRECTOR
Focal length	882 mm
Focal ratio	F/7.3
Image circle diameter	40 mm
Metal back distance	117.5 mm
WITH TOA-35RD FOCAL REDUCER
Focal length	672 mm
Focal ratio	F/5.6
Image circle diameter	40 mm
Metal back distance	62.5 mm
WITH EXT-ED1.5X FOCAL EXTENDER
Focal length	1350 mm
Focal ratio	F/11.3
Image circle diameter	44 mm
Metal back distance	117.5 mm

Takahashi TSA-120 refractor

CHARACTERISTIC	TAKAHASHI TSA-120 REFRACTOR
Length of the optical tube	990 mm (870 mm with retracted dew shield)
Diameter of the optical tube	125 mm
Diameter of the dew shield	160 mm
Weight	6.7 kg
Focuser	Rack-and-pinion