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| OPTICAL TUBE INFORMATION: | |
|---|---|
| Optical Design: | refractor |
| diaphragm: | 80mm (3.1") |
| Focal length: | 400mm (15.74") |
| Focus Ratio: | f/5 |
| Focal Length of Lens 1: | 20mm (0.78") |
| Magnification of Lens 1: | 20x |
| Focal Length of Lens 2: | 10mm (0.4") |
| Magnifying Lens 2: | 40x |
| Barlow Lens: | Not included |
| Finder: | StarPointer™ red dot finder scope |
| Star Diagonal: | Upright View, 90° (1.25") |
| Optical Tube: | Aluminum |
| Maximum Useful Magnification: | 189x |
| Least Useful Magnification: | 11x |
| Limiting Star Size: | 12 |
| Resolution (Rayleigh): | 1.74 arc seconds |
| Resolution (Dawes): | 1.45 arc seconds |
| Light Gathering Power (Compared to human eye): | 131x |
| Secondary Mirror Obstacle: | 25mm (1") |
| Secondary Mirror Obstacle by Area: | 4.96% |
| Secondary Mirror Obstacle by Diameter: | 22% |
| Optical Coatings: | Fully Coated |
| Optical Tube Length: | 184mm (7.24") |
| Optical Tube Diameter: | 90mm (3.54") |
| Optical Tube Weight: | 2.65 pounds (1.2 kg) |
| swallowtail: | CG-5 Dovetail rod |
| INSTALLATION INFORMATION: | |
| Mounting Type: | Manual Alt Azimuth |
| Height adjustment range (including mount and tripod): | 812.8mm - 1295.4mm (32"-51") |
| Tripod Foot Diameter: | 31.75 mm (1.25") steel legs |
| Accessory Tray: | Yes |
| Turning Speeds: | Manual |
| Tripod Weight: | 3.6 kg (7.9 lb) including mounting weight |
| Dovetail Compatibility: | CG-5 saddle plate |
| Software: | Celestron Starry Night Basic Edition Software and SkyPortal App |
| Total Telescope Kit Weight: | 10.55 pounds (4.78 kg) |
| Included Items: | optical tube Mount and tripod (pre-assembled) 20 mm and 10 mm eyepieces StarPointer™ red dot finder scope Upright image diagonal Guide |
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