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Omegon AC 70/900 EQ-1 Telescope Specs
| Brand | Omegon |
| Full Model Code | Omegon AC 70/900 Achromatic Refractor on EQ-1 Equatorial Precision Mount System |
| Country of Origin | Germany (Designed) / China (Manufactured) |
| Optical Design | Achromatic Refractor (Two-Element Air-Spaced Crown and Flint Glass Objective Layout) |
| Aperture | 70 mm (2.76 inches) |
| Focal Length | 900 mm |
| Focal Ratio | f/12.9 |
| 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 | 1.66 Arcseconds (Dawes), 1.97 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 11.0 |
| Highest Useful Magnification | 140x |
| Lowest Useful Magnification | 10x |
| 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 Manual Tension Adjuster Screw |
| Mirror Lock Mechanism | No (Refractor Mechanical Focuser Layout Inapplicable) |
| Optical Tube Dimensions | 85 mm x 870 mm |
| Optical Tube Weight | 1.70 kg (3.75 lbs) - OTA Only / 6.50 kg (14.33 lbs) - Combined Total Assembly Weight |
| Mount Attachment Type | Hinged Tube Ring Array Attached Directly to EQ-1 Mount Head Interface Plate |
| Finder Scope Specification | 6x30 Optical Crosshair Finder Telescope Unit Fitted on Fixed Secondary Support Bracket |
| Included Accessories | 70mm Achromatic Refractor OTA, EQ-1 Equatorial Mount Head, Aluminum Tripod with Accessory Tray, Counterweight Shaft and Balance Mass, Flexible Slow-Motion Tracking Cables, 6x30 Optical Finder Scope, 90-Degree Star Diagonal Mirror 1.25-inch, Super 20mm Eyepiece, Super 10mm Eyepiece |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Introductory manual equatorial tracking of solar system targets, utilizing an explicit f/12.9 focal system index to sharpen visual contrast over planetary details like Jupiter's primary cloud bands. |
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