Takahashi TOA-35 0.7x Reducer Set for TOA-150, TSA-102/120

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Takahashi TOA-150 0.7X Reducer for TOA
The Takahashi TOA-35 0.7x reducer is designed to make your telescope faster while delivering a flatter, sharper field with improved color correction. Its four-element, three-group design uses low-dispersion, high-refractive-index glass in two elements, reducing focal length by 30% for brighter, more detailed images.
When paired with the TOA-150, it produces razor-sharp stars just 3 microns in the center and 6 microns at the edges, maintaining an impressively flat field. For the TSA-102 and TSA-120, center stars are 8 microns and edge stars 12 microns, all while enhancing color accuracy across the frame. This reducer makes wide-field imaging faster, sharper, and more color-true—perfect for capturing stunning, high-quality astrophotography.
Train Connection Chart for TSA-120


Train Connection Chart for TOA-150


Specifications:
- TOA-150:
- Focal Length: 775 mm
- Focal Ratio: f/5.2
- Image Circle: 44 mm
- Metal Back Distance: 68.5 mm (2.7 in)
- TSA-102:
- Focal Length: 575 mm
- Focal Ratio: f/5.6
- Image Circle: 44 mm
- Metal Back Distance: 68.5 mm (2.7 in)
- TSA-120:
- Focal Length: 635 mm
- Focal Ratio: f/5.3
- Image Circle: 44 mm
- Metal Back Distance: 68.5 mm (2.7 in)
Other Information
- Country of Manufacture: Japan
Takahashi TOA-150 0.7X Reducer for TOA
The Takahashi TOA-35 0.7x reducer is designed to make your telescope faster while delivering a flatter, sharper field with improved color correction. Its four-element, three-group design uses low-dispersion, high-refractive-index glass in two elements, reducing focal length by 30% for brighter, more detailed images.
When paired with the TOA-150, it produces razor-sharp stars just 3 microns in the center and 6 microns at the edges, maintaining an impressively flat field. For the TSA-102 and TSA-120, center stars are 8 microns and edge stars 12 microns, all while enhancing color accuracy across the frame. This reducer makes wide-field imaging faster, sharper, and more color-true—perfect for capturing stunning, high-quality astrophotography.
Train Connection Chart for TSA-120


Train Connection Chart for TOA-150


Specifications:
- TOA-150:
- Focal Length: 775 mm
- Focal Ratio: f/5.2
- Image Circle: 44 mm
- Metal Back Distance: 68.5 mm (2.7 in)
- TSA-102:
- Focal Length: 575 mm
- Focal Ratio: f/5.6
- Image Circle: 44 mm
- Metal Back Distance: 68.5 mm (2.7 in)
- TSA-120:
- Focal Length: 635 mm
- Focal Ratio: f/5.3
- Image Circle: 44 mm
- Metal Back Distance: 68.5 mm (2.7 in)
- 0.77x reducer
- Adapter ring for 150, 102 and 120 refractors
Takahashi TOA-150 0.7X Reducer for TOA
The Takahashi TOA-35 0.7x reducer is designed to make your telescope faster while delivering a flatter, sharper field with improved color correction. Its four-element, three-group design uses low-dispersion, high-refractive-index glass in two elements, reducing focal length by 30% for brighter, more detailed images.
When paired with the TOA-150, it produces razor-sharp stars just 3 microns in the center and 6 microns at the edges, maintaining an impressively flat field. For the TSA-102 and TSA-120, center stars are 8 microns and edge stars 12 microns, all while enhancing color accuracy across the frame. This reducer makes wide-field imaging faster, sharper, and more color-true—perfect for capturing stunning, high-quality astrophotography.
Train Connection Chart for TSA-120


Train Connection Chart for TOA-150


Specifications:
- TOA-150:
- Focal Length: 775 mm
- Focal Ratio: f/5.2
- Image Circle: 44 mm
- Metal Back Distance: 68.5 mm (2.7 in)
- TSA-102:
- Focal Length: 575 mm
- Focal Ratio: f/5.6
- Image Circle: 44 mm
- Metal Back Distance: 68.5 mm (2.7 in)
- TSA-120:
- Focal Length: 635 mm
- Focal Ratio: f/5.3
- Image Circle: 44 mm
- Metal Back Distance: 68.5 mm (2.7 in)
Other Information
- Country of Manufacture: Japan
- 0.77x reducer
- Adapter ring for 150, 102 and 120 refractors

Takahashi TOA-35 0.7x Reducer Set for TOA-150, TSA-102/120
