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Omegon Photographic Set Refractor Specs
| Brand | Omegon |
| Full Model Code | Omegon Achromatic Multi-Purpose Imaging and Guiding Refractor Photography Pack |
| Country of Origin | Germany (Designed) / China (Manufactured) |
| Optical Design | Achromatic Refractor (Two-Element Air-Spaced Crown and Flint Glass Objective Layout) |
| Aperture | 80 mm (3.15 inches) |
| Focal Length | 400 mm |
| Focal Ratio | f/5 |
| Optical Coatings | Multi-Coated Anti-Reflective Optical Layer Treatment on All Air-to-Glass Surfaces |
| Glass Material | Standard Crown and Flint Optical Glass Elements |
| Secondary Mirror Obstruction | 0 mm (Refractor System / Free Aperture Profile) |
| Secondary Mirror Obstruction by Diameter | 0.0% |
| Secondary Mirror Obstruction by Area | 0.00% |
| Resolving Power | 1.45 Arcseconds (Dawes), 1.72 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 11.3 |
| Highest Useful Magnification | 160x |
| Lowest Useful Magnification | 11x |
| Optical Tube Material | Fully Enclosed Rigid Aluminum Tube Construction with Internal Matte-Black Anti-Reflection Baffles |
| Focuser Style & Mechanism | 1.25-inch Standard Rack and Pinion Drive Focuser Array with Integrated T2 External Photographic Threads |
| Mirror Lock Mechanism | No (Refractor Mechanical Focuser Layout Inapplicable) |
| Optical Tube Dimensions | 95 mm x 370 mm |
| Optical Tube Weight | 1.60 kg (3.53 lbs) |
| Mount Attachment Type | Adjustable Double-Ring Guiding Scope Baseplate Ring Frame Set with Nylon Isolation Screws |
| Finder Scope Specification | Not Included / Guide Scope Module Configured for Primary CCD Camera Tracking Layers |
| Included Accessories | 80mm Achromatic Refractor OTA, Adjustable Guiding Scope Ring Brackets, Vixen-Style Dovetail Bar, T2 Camera Adaptation Extension Coupling, 1.25-inch Extension Drawtube Adapter Ring |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Auxiliary auto-guiding tracking routines or low-resolution wide-field secondary deep-sky capture loops, implementing a dual hinged retention ring frame to allow precise geometric offsets. |
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