Description 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). Specifications Telescope TSA-120 Part Number TTK12010 Aperture 120 mm Resolution 0.97" Limiting Magnitude 12.1 Light Gathering Power 293X Focal Length 900 mm Focal Ratio f/7.5 Optical Type Fluorite ED Triplet Tube Diameter 125 mm Tube Length (With Lens hood retracted) 990mm (870mm) Tube Weight 6.7kg Recommended Finder 7x50 Metal Back Distance 227.5mm Telescope Specifications TSA-120 System Chart
