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TS Optics Imaging Star AP 102/520 6-Element Flatfield OTA Specs
| Brand | TS Optics (Teleskop-Service) |
| Full Model Code | TS Optics Imaging Star 102 mm f/5.1 6-Element Flatfield Apochromatic Refractor Optical Tube Assembly |
| Country of Origin | Germany (Design / Quality Control Oversight) |
| Optical Design | Apochromatic Astrograph (6-Element Optical Array utilizing a 3-element air-spaced triplet objective cell and a rear 3-element flattener group) |
| Aperture | 102 mm (4.02 inches) |
| Focal Length | 520 mm |
| Focal Ratio | f/5.10 |
| Optical Coatings | Advanced Broad-Band Multi-Coated Matrix layers on all air-to-glass optical boundaries |
| Glass Material | Premium Japanese Ohara FPL-53 Extra-Low Dispersion Glass core element matched with specialized high-transmission crown glasses |
| Secondary Mirror Obstruction | 0 mm (Unobstructed Optical Path Setup) |
| Secondary Mirror Obstruction by Diameter | 0% |
| Secondary Mirror Obstruction by Area | 0% |
| Resolving Power | 1.14 Arcseconds (Dawes), 1.35 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 11.8 |
| Highest Useful Magnification | 204x |
| Lowest Useful Magnification | 15x |
| Optical Tube Material | Rigid Powder-Coated Aluminum Tube lined with precision internal stray-light trapping baffles |
| Focuser Style & Mechanism | 3-inch Ultra-Heavy-Duty Rack and Pinion Focuser Unit with 360-degree rotation, M48x0.75 camera connection threads, and 10:1 micro-focus reduction |
| Mirror Lock Mechanism | No (Equipped with manual drawtube friction locking tension adjustments) |
| Optical Tube Dimensions | 121 mm x 440 mm (Tube Outer Diameter x Compact Retracted Transport Length Profile) |
| Optical Tube Weight | 5.60 kg (12.35 lbs) (Total baseline setup weight including multi-functional CNC ring blocks and mounting tracking rail) |
| Mount Attachment Type | CNC-Machined Aluminum Tube Clamps paired with a universal Vixen-Style GP-Level Dovetail Plate Frame |
| Finder Scope Specification | Universal quick-release finder bracket module base attached on the primary focuser housing assembly |
| Included Accessories | 102mm 6-Element Optics, 3-inch Dual-Speed RAP Focuser, CNC Tube Rings, Vixen Dovetail Bar, Integrated M48 Camera Thread Array |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Professional high-speed full-frame astrophotography, utilizing a sophisticated 6-element layout to resolve an ultra-flat, vignetting-free field footprint. |
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