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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.
Available Upon Request
This category includes products which are not kept in stock and for some reasons -which don’t depend on our company- can’t be available in less than 14 days. Specifically, this category includes new products thar are pre-advertised by manufacturers, however they are not available in Greece yet. You can pre-order these items with a special preferential price. If the estimated arrival date of this product is already known, then the estimated date will be written above the indication “AVAILABLE UPON REQUEST”.
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.
| 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
All orders we receive until 15:00 concerning products in our warehouse, processed on the same day
Well-trained scientific and technical personnel are available to you at any time, to solve the questions and concerns about your equipment.
If you are not satisfied with the product you received, you can return it within 14 days of receipt.
Experience you can trust. Planetarium of Thessaloniki is the largest supplier of astronomy goods in the Balkans
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