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Telescopes (กล้องดูดาว) > Celestron >
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ITEM # 22201 ASTRO FI 90MM REFRACTOR TELESCOPE |
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ITEM # 22201 ASTRO FI 90MM REFRACTOR TELESCOPE - Control your telescope via integrated WiFi using the free Celestron SkyPortal app for iPhone, iPad, and Android devices
- 90 mm refractor with fully coated glass optics provides outstanding views of the Moon, planets, and nebulae, and more.
- Accessory tray holds 2 x 1.25" eyepieces, miscellaneous accessories, including a rubber-lined area for a smart phone or small tablet.
- Includes a StarPointer finderscope, 2 Kellner eyepieces, and mirror star diagonal.
SPECIFICATIONS| Optical Tube Info: | |
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| Optical Deisgn | Refractor |
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| Aperture | 90 mm (3.54 in) |
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| Focal Length | 910 mm (36 in) |
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| Focal Ratio | 10.1 |
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| Focal Length of Eyepiece 1 (mm) | 25 mm (0.98 in) |
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| Magnification of Eyepiece 1 | 36x |
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| Focal Length of Eyepiece 2 (mm) | 10 mm (0.39 in) |
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| Magnification of Eyepiece 2 | 91x |
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| Finderscope | StarPointer |
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| Star Diagonal | 1.25" |
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| Mount Info: | |
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| Mount Type | Single Fork Arm Altazimuth |
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| Accessory Tray | Includes rubberized smartphone or tablet holder |
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| Tripod | Aluminum |
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| Highest Useful Magnification | 213x |
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| Lowest Useful Magnification | 13x |
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| Limiting Stellar Magnitude | 12.3 |
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| Resolution (Rayleigh) | 1.54 arc seconds arc seconds |
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| Resolution (Dawes) | 1.29 arc seconds arc seconds |
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| Light Gathering Power (Compared to human eye) | 165x |
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| Optical Coatings | Fully Coated |
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| Optical Tube Length | 37.2 in/94.5 cm in (945 mm) |
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| Total Telescope Kit Weight | 14.2 lbs (6.44 kg) |
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| Slew Speeds | Up to 3 deg/second |
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| Tracking Rates | Sidereal, Solar, and Lunar |
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| Alignment Procedures | SkyAlign, 3-Star Align, Solar System Align |
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| Communication Ports | Aux port for optional hand control |
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| Database | Over 120,000 objects including 220 of the best deep sky and solar system objects |
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