Takahashi TOA-130NFB Refractor
Starting Price: $6,760.00
Price as Configured: $6,760.00
Price as Configured: $6,760.00
Brand: Takahashi / SKU: TA-TOK13210
The Takahashi® TOA-130NFB is one of the most optically precise 130mm refractors available — a dual ED triplet that eliminates spherical aberration to a degree most apochromatic designs never achieve. Deep Space Products is an authorized Takahashi dealer with the technical experience to help you configure a complete imaging system around it, from mount selection to back-focus calculations. The TOA-130NFB is also well suited for permanent hosting at DSP Remote, our Bortle 1 observatory in southwest New Mexico. Questions? Contact us — we help customers match equipment to their imaging goals.
We cannot sell Takahashi products to customers outside of the United States.
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SPECIFICATIONS: Takahashi TOA-130NFB Refractor Paste into the Attributes / Specifications TabContent field in the DSP CMS Date: 2026-03-15
Specifications
Optics
| Optical Design | Ortho-Apochromat ED Triplet (air-spaced) |
| Lens Elements | 3 — front and rear: FPL-53 Extra-Low Dispersion glass; center: optical crown glass |
| Aperture | 130mm (5.1") |
| Focal Length | 1,000mm |
| Focal Ratio | f/7.7 |
| Chromatic Correction | Focal shift ≤ ±0.01mm across 436–656nm (less than 1/100th of a typical APO design) |
| Strehl Ratio | ~0.992 |
| Wavefront Accuracy | 1/12 wave |
| Angular Resolution (Dawes) | 0.89 arcseconds |
| Limiting Magnitude (visual) | ~12.7 |
| Internal Baffles | Multiple knife-edge baffles |
| Lens Cell Construction | Air-spaced; fully collimatable; no oil fill |
| Multicoating | Anti-reflection multicoatings on all surfaces |
Focuser
| Focuser Type | Rack-and-pinion |
| Focuser Diameter | 4" (102mm) |
| Fine Focus Ratio | 7:1 dual-speed |
| Camera Angle Adjuster | 360° built-in (CAA) |
| Back Focus | ~274.5mm |
| Focuser Stability | Dual-knob; no-slip design for heavy imaging payloads |
| Eyepiece Holder (large) | 50.8mm (2") threaded |
| Eyepiece Holder (small) | 31.7mm (1.25") compression ring |
Imaging Performance
| Imaging Circle — Native (fully illuminated) | 70mm |
| Imaging Circle — With 67-Series Flattener (usable) | 90mm |
| Imaging Circle — With 67-Series Flattener (fully illuminated) | 70mm |
| Field of View — With 67-Series Flattener | 5.3° |
| Sensor Compatibility | Full-frame 35mm and medium format (6×7cm) with optional flattener |
| Recommended Flattener | TOA-67 Field Flattener (67-series) |
| Focal Reducer Available | Yes |
| Extender Available | Yes — 1.5× and 1.6× |
Mechanical
| Tube Outer Diameter | 155mm |
| Tube Length (dew shield retracted) | ~813mm (32") |
| OTA Weight | ~22 lbs (10 kg) OTA only — verify with current Takahashi documentation |
| Dew Shield | Retractable |
| Finish | Matte white powder coat |
| Tube Rings / Holder Included | No — sold separately |
| Finderscope Included | No — FQR-1 base included for optional 7×50 finder |
| Hard Case Included | No — sold separately |
Package Contents
| Included in Box | Optical tube assembly (OTA); CAA ring (TKP30200); Coupling W (TKP31003); 50.8mm sleeve (TKP00113); Coupling S (TKP00103); Eyepiece adapter 31.7mm (TKP00101); Eyepiece adapter 50.8mm (TKP27110); Extension tube 50.8mm (TKP31112) |
| Not Included | Tube rings / tube holder; finderscope; hard transport case; mount |
Product Identification
| Manufacturer | Takahashi (Japan) |
| Model | TOA-130NFB |
| Part Number | TOK13310 — verify current SKU with Takahashi America before publishing |
| Legacy Part Number | TOK13210 / TSA0131 |
| Country of Manufacture | Japan |
