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TS Optics CF-APO 70 FPL55 Triplet AP 70/420 OTA Specs
| Brand | TS Optics (Teleskop-Service) |
| Full Model Code | TS Optics CF-APO 70 mm f/6 FPL55 Triplet Apochromatic Refractor Optical Tube Assembly |
| Country of Origin | Germany (Design / Quality Control / Optical Bench Certification Testing) |
| Optical Design | Apochromatic Refractor (3-Element Air-Spaced Triplet Objective Cell inside an adjustable mechanical cell frame) |
| Aperture | 70 mm (2.76 inches) |
| Focal Length | 420 mm |
| Focal Ratio | f/6.00 |
| Optical Coatings | Premium Broad-Band Fully Multi-Coated (FMC) layers across all air-to-glass lens transitions |
| Glass Material | Premium Japanese Ohara FPL-55 Extra-Low Dispersion Glass element paired with high-transparency special matching glass |
| Secondary Mirror Obstruction | 0 mm (Unobstructed Optical Path Setup) |
| Secondary Mirror Obstruction by Diameter | 0% |
| Secondary Mirror Obstruction by Area | 0% |
| Resolving Power | 1.65 Arcseconds (Dawes), 1.97 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 11.0 |
| Highest Useful Magnification | 140x |
| Lowest Useful Magnification | 10x |
| Optical Tube Material | Rigid Powder-Coated Aluminum Tube lined with precision internal stray-light trapping baffles |
| Focuser Style & Mechanism | 2-inch Heavy-Duty Dual-Speed Rack and Pinion Focuser featuring 360-degree rotation, M54x0.75 connection threads, and 10:1 micro-focusing reduction |
| Mirror Lock Mechanism | No (Equipped with robust non-marring structural friction drawtube clamp screws) |
| Optical Tube Dimensions | 76 mm x 300 mm (Tube Outer Diameter x Retracted Dew Shield Operating Length Profile) |
| Optical Tube Weight | 2.60 kg (5.73 lbs) (Baseline setup weight inclusive of standard CNC ring blocks and integrated dovetail plate rail) |
| Mount Attachment Type | CNC-Machined Aluminum Tube Rings paired with a standard GP-Level Vixen Dovetail Plate Frame |
| Finder Scope Specification | Universal quick-release finder bracket shoe base mounted directly onto the primary focuser ring |
| Included Accessories | 70mm FPL55 Triplet Lens, 2-inch RAP Focuser, CNC Tube Rings, Carrying Handle, Vixen Dovetail Rail, Sturdy Transport Case, Certified Optical Inspection Certificate |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Elite compact wide-field tracking and ultra-sharp mobile astrophotography, delivering flawless color correction via certified FPL55 triplet optical segments. |
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