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Bresser Junior AC 70/900 EL Telescope Specs
| Brand | Bresser |
| Full Model Code | Bresser Junior 70/900 EL |
| Country of Origin | Germany |
| Optical Design | Achromatic Refractor (Long Optical Format) |
| Aperture | 70 mm (2.75 inches) |
| Focal Length | 900 mm |
| Focal Ratio | f/12.8 |
| Optical Coatings | Multi-Coated Optics |
| Secondary Mirror Obstruction | 0 mm (0%) |
| Secondary Mirror Obstruction by Area | 0% |
| Resolving Power | 1.65 Arcseconds |
| Limiting Visual Magnitude | 11.3 |
| Highest Useful Magnification | 140x |
| Lowest Useful Magnification | 10x |
| Optical Tube Material | Aluminum |
| Focuser Style & Mechanism | 1.25-inch Standard Rack and Pinion Focuser |
| Mirror Lock Mechanism | No (Refractor Tube Configuration) |
| Mount Attachment Type | EL Mount (Alt-Azimuth Fork Mount Configuration with Flexible Axis Fine Control) |
| Finder Scope Specification | LED Red Dot Finder |
| Included Accessories | 20mm Kellner Eyepiece (45x), 12.5mm Kellner Eyepiece (72x), 4mm Kellner Eyepiece (225x), 1.5x Erecting Lens, 90-Degree Star Diagonal (1.25-inch), 3x Barlow Lens, EL Fork Mount, Adjustable Aluminum Tripod, Stellarium Software Download |
| Power Requirements | 3V CR2032 Lithium battery for Red Dot Finder |
| Standard Warranty | 2-Year Factory Warranty |
| Application | Manual grab-and-go educational tracking for detailed planetary surface study and clear lunar tracking, leveraging an f/12.8 optical configuration to control chromatic fringing. |
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