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Skywatcher AC 120/600 StarTravel BD AZ-3 Telescope Specs
| Brand | Sky-Watcher |
| Full Model Code | Sky-Watcher StarTravel 120 Black Diamond Achromatic Refractor Kit with AZ-3 Alt-Azimuth Mount |
| Country of Origin | China (Manufactured) |
| Optical Design | Achromatic Refractor (Short-Tube Crown-and-Flint Doublet Optical Layout) |
| Aperture | 120 mm (4.72 inches) |
| Focal Length | 600 mm |
| Focal Ratio | f/5 |
| Optical Coatings | Multi-Coated Optical Lens Surface Coating Anti-Reflective System |
| Glass Material | Standard Optical Crown and Flint Glass Substrate Components |
| 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 | 0.96 Arcseconds (Dawes), 1.15 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 12.9 |
| Highest Useful Magnification | 240x |
| Lowest Useful Magnification | 17x |
| Optical Tube Material | Roll-Formed Sheet Steel Optical Tube Cylinder Finished in Metallic Black Diamond Powder Coat |
| Focuser Style & Mechanism | 2-inch Rack and Pinion Focuser Assembly with Direct Tension-Adjust Locking Screws |
| Mirror Lock Mechanism | Not Applicable |
| Optical Tube Dimensions | 135 mm x 540 mm (With Dew Shield) |
| Optical Tube Weight | 3.90 kg (8.60 lbs) (OTA Only) / 8.90 kg (19.62 lbs) (Complete Mount Setup Weight) |
| Mount Attachment Type | Direct Attachment via Tube Rings to the AZ-3 Cradle Head Plates with Slow-Motion Cables |
| Finder Scope Specification | Red Dot Finder Assembly with Variable Intensity Level Alignment Adjustments |
| Included Accessories | 120mm Short-Tube Refractor, AZ-3 Alt-Az Mount, Aluminum Tripod Legs, Slow-Motion Control Cables, Red Dot Finder, 45-Degree Terrestrial Erecting Prism, 25mm Eyepiece, 10mm Eyepiece |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Rich-field sky hunting loops and dual-use terrestrial sweep campaigns, utilizing a fast f/5 layout on a light alt-azimuth base to quickly sample vast deep-space nebular paths. |
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