ΤΗΛΕΣΚ.

ΤΗΛΕΣΚ."TAKAHASHI TSA-120"(only tube)

ΤΗΛΕΣΚ."TAKAHASHI TSA-120"(only tube)

TAKAHASHI

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.

€4,860.00

Available Upon Request

Available Upon Request

In this case, we do not keep the products in stock but are only available upon pre-order. As soon as we receive your order, we will notify you by e-mail or phone, about the exact delivery time.

Availability: In stock
SKU
TAK-TTK12010


TSA-120 (OTA) WITH 50.8/31.75 ADAPTER


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.

More Information
Net Weight (g) 6700
Optical design Apochromatic Refractor
Aperture (mm) 120
Focal length - F (mm) 900
Focal ratio (f/) 8
Mount Not included
Maximum useful magnification (x) 240
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
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
Focuser Rack-and-pinion
 
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

Spot-diagram of Takahashi TSA-120 at prime focus

Spot-diagram of Takahashi TSA-120 with TOA-35FL field corrector

Spot-diagram of Takahashi TSA-120 with TOA-35RD focal reducer

Write Your Own Review
Only registered users can write reviews. Please Sign in or create an account