احصل على د.إ. 147.23 رصيد مسترجع باستخدام بطاقة بنك المشرق نون الائتمانية. اشترك الآن. قدّم الحين
OPTICAL TUBE INFORMATION: | |
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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 |
تلسكوب أستروماستر 80AZ قصير 21082