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Explore Scientific AP 165/1155 FPL-53 CF FT 3.0" Specs
| Brand | Explore Scientific |
| Full Model Code | Explore Scientific ED Apochromatic Refractor 165mm f/7 FPL-53 Carbon Fiber Feather Touch (0112165) |
| Country of Origin | United States / Germany / China |
| Optical Design | Apochromatic Refractor (Triplet Objective Lens with Air-Spaced Element Array) |
| Aperture | 165 mm (6.5 inches) |
| Focal Length | 1155 mm |
| Focal Ratio | f/7 |
| Optical Coatings | Enhanced Multi-Lens Coating Matrix (EMC) |
| Glass Material | Ohara FPL-53 Ultra-Low Dispersion (ED) Glass Element Core |
| Secondary Mirror Obstruction | 0 mm (None) |
| Secondary Mirror Obstruction by Diameter | 0% |
| Secondary Mirror Obstruction by Area | 0% |
| Resolving Power | 0.70 Arcseconds (Dawes), 0.84 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 13.6 |
| Highest Useful Magnification | 330x |
| Lowest Useful Magnification | 24x |
| Optical Tube Material | Premium High-Modulus Carbon Fiber weave structure |
| Focuser Style & Mechanism | 3.0-inch Starlight Instruments Feather Touch Focuser with Pinion Assembly and Dual-Speed 10:1 Reduction Gear |
| Mirror Lock Mechanism | No |
| Optical Tube Dimensions | 170 mm x 1030 mm (With Dew Shield Retracted) |
| Optical Tube Weight | 13.20 kg (29.1 lbs) |
| Mount Attachment Type | Heavy-Duty Losmandy-Style CGE Dovetail Plate with Stainless Steel Face Protection |
| Finder Scope Specification | Optional Accessory Slot Configuration |
| Included Accessories | 3.0-inch Feather Touch Focuser Assembly, Heavy-Duty Cradle Rings with Carrying Handle, Losmandy-Style Dovetail Bar, Retractable Dew Shield, Custom Fitted Aluminum Hard Flight Case |
| Standard Warranty | 10-Year Extended Warranty (Requires Online Registration) |
| Application | Research-grade large-sensor astrophotography and unvignetted imaging tracking, matching an oversized Ohara FPL-53 core with a premium 3-inch focal tube to stabilize heavy sensory arrays during long exposures. |
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