Takahashi TSA-120 Triplet APO Refractor
| Article number: | TTK12010 |
| Availability: | More on the Way to us |
| Delivery time: | More on the Way to us |
FREE EXTENDER ED 1.5X AND 35 FLATTENER (TKA37595 AND TKA31582) UNTIL JULY 31,2018!
The TSA series is a member of Takahashi’s line of triplet refractors. In the TSA design, an ED glass lens is placed between two lenses, with air spacing in between. The resulting system achieves a high level of apochromatic performance for both visual observation and imaging.
TSA-120
The TSA-120 is a 120 mm apochromatic f/7.5 refractor with a focal length of 900 mm. It features a retractable lens hood and a 2.7 inch rack and pinion focuser. The TSA is compatible with several flatteners, reducers and extenders, including the TOA-35 Reducer, which converts the telescope to a f/5.3 imaging platform with a 44 mm image circle.
Optical Tube Assembly only (mount, tripod, tube holder and finder sold separately).
The TSA-120 is the second triplet apochromat in the TSA Series. Its superb color correction will provide high contrast images with pin point stars across the field.
The compact size of 28” allows the TSA-120 to be easily transported to remote sites.
The TSA-120 is a great scope for imaging. The TOA 35 flattener converts the 120 into an f/7.3 882mm flat field 2.6º instrument and the reducer changes it to an f/5.6 672mm
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OPTICAL SPECIFICATIONS for the TSA-120 (Tube assembly only)
Takahashi TSA-120 Specifications...
- Aperture: 120mm
- Focal Length: 900mm
- Focal Ratio: 7.5
- Tube Length with Dew Shield: 990m
- Tube Diameter: 125mm
- Diameter of Dew Shield: 713mm (28")
- Resolution: 0.97
- Limiting Magnitude: 12.
- Back Focus: 227.5mm (8.93")
- Weight: 12.6 lbs
With TOA-35 Flattener:
- Focal Length: 882mm
- Focal Ratio: f/7.3
- Optical Performance: 7 micron RMS-spot to 20mm off axis
- Image Circle: 40mm
- Image Field: 2.6" diameter
With TOA-35 Reducer:
- Focal Length: 672mm
- Focal Ratio: f/5.6
- Optical Performance: 4 microns RMS-spot on axis, 6 microns 10mm off-axis, 13 microns 20mm off-axis, 40mm/3.4" field
| Focal Length | 672mm |
| Focal Ratio | f/5.6 |
| Optical performance | 4 microns RMS-spot on axis 6 microns 10mm off-axis 13 microns 20mm off-axis 40mmø/3.4º field |