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Skywatcher AP 72/420 EvoStar 72 ED DS Pro OTA Specs
| Brand | Sky-Watcher |
| Full Model Code | Sky-Watcher EvoStar 72ED Doublet Apochromatic Refractor Black Diamond DS-Pro Optical Tube Assembly |
| Country of Origin | China (Manufactured) |
| Optical Design | Apochromatic Refractor (2-Element Air-Spaced ED Doublet Objective Configuration) |
| Aperture | 72 mm (2.83 inches) |
| Focal Length | 420 mm |
| Focal Ratio | f/5.8 |
| Optical Coatings | Metallic High-Transmission Coating (MHC) Application Generating 99.5% Lens Layer Efficiency |
| Glass Material | Premium Ohara FPL-53 Extra-Low Dispersion Synthetic Fluorite Core Component with Schott Glass Companion Lens |
| Secondary Mirror Obstruction | 0 mm (Refractor Design with Clear Optical Path Layout) |
| Secondary Mirror Obstruction by Diameter | 0.00% |
| Secondary Mirror Obstruction by Area | 0.00% |
| Resolving Power | 1.61 Arcseconds (Dawes), 1.92 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 11.9 |
| Highest Useful Magnification | 144x |
| Lowest Useful Magnification | 10x |
| Optical Tube Material | Roll-Formed Sheet Steel Optical Tube Cylinder Finished in Metallic Black Diamond Powder Coat |
| Focuser Style & Mechanism | 2-inch Dual-Speed Crayford Focuser Assembly featuring 10:1 Micro-Focus Reduction Gear Drive |
| Mirror Lock Mechanism | Not Applicable |
| Optical Tube Dimensions | 85 mm x 420 mm |
| Optical Tube Weight | 2.00 kg (4.41 lbs) |
| Mount Attachment Type | Cast Aluminum Tube Rings bolted to a Standard Medium Vixen-Style Dovetail Bar Interfacing |
| Finder Scope Specification | Not Included / Fitted with Standard Quick-Release Finder Base Shoe Profile |
| Included Accessories | 72mm ED Doublet OTA, Support Tube Rings, Vixen Dovetail Rail, 2-inch to 1.25-inch Reducer Adapter, Aluminum Hard Case |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Compact travel astrophotography capturing sequences, leveraging a false-color-free FPL-53 glass layout inside a lightweight structural frame to match travel tracker setups. |
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