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Omegon N 130/920 EQ-2 Telescope Specs
| Brand | Omegon |
| Full Model Code | Omegon N 130/920 Spherical Newtonian Reflector on EQ-2 Equatorial Precision Mount System |
| Country of Origin | Germany (Designed) / China (Manufactured) |
| Optical Design | Newtonian Reflector (Spherical Primary Mirror Layout with Planar Secondary Mirror) |
| Aperture | 130 mm (5.12 inches) |
| Focal Length | 920 mm |
| Focal Ratio | f/7.1 |
| Optical Coatings | Standard Aluminum Coating Treatment with Protective Monoxide Overlay Layer |
| Glass Material | Standard BK7 Optical Glass Substrates |
| Secondary Mirror Obstruction | 34 mm |
| Secondary Mirror Obstruction by Diameter | 26.15% |
| Secondary Mirror Obstruction by Area | 6.84% |
| Resolving Power | 0.89 Arcseconds (Dawes), 1.06 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 12.4 |
| Highest Useful Magnification | 260x |
| Lowest Useful Magnification | 18x |
| Optical Tube Material | Roll-Formed Heavy-Gauge Steel Cylinder Shell with Cast Aluminum Cell Framework End Rings |
| Focuser Style & Mechanism | 1.25-inch Standard Rack and Pinion Drive Focuser Array with Manual Tension Adjuster Screw |
| Mirror Lock Mechanism | Yes (Rear Secondary Pull-and-Push Manual Collimation Retention Screws on Mirror Base) |
| Optical Tube Dimensions | 160 mm x 890 mm |
| Optical Tube Weight | 3.60 kg (7.94 lbs) - OTA Only / 9.90 kg (21.83 lbs) - Combined Total Assembly Weight |
| Mount Attachment Type | Hinged Tube Ring Array Attached Directly to EQ-2 Mount Head Interface Plate |
| Finder Scope Specification | 6x30 Optical Crosshair Finder Telescope Unit Fitted on Fixed Secondary Support Bracket |
| Included Accessories | 130mm Spherical Newtonian OTA, EQ-2 Equatorial Mount Head, Aluminum Tripod with Accessory Tray, Counterweight Shaft and Balance Mass, Flexible Slow-Motion Tracking Cables, 6x30 Optical Finder Scope, 1.25-inch Kellner 25mm Eyepiece, 1.25-inch Kellner 10mm Eyepiece |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Amateur sky cataloging sweeps covering lunar details and planetary objects, exploiting an explicit f/7.1 geometry curve to limit field aberrations at high visual magnifications. |
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