Celestron ASTRO FI 22201, Instruction Manual

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10 | ENGLISH
A s t ro Fi T E L E SCOPE
SPECIFICATIONS
SKU # 22201 22202
Optical Design Refractor Maksutov-Cassegrain
Aperture 90 mm (3.5”) 102 mm (4.0”)
Focal Length 910 mm 1325 mm
Focal Ratio f/10.1 f/13
Optical Coatings Fully-coated Fully-coated
Eyepiece / Magnifi cation 25 mm Kellner (1.25”) / 36x;
10 mm Kellner (1.25”) / 91x 25 mm Kellner (1.25”) / 53x;
10 mm Kellner (1.25”) / 132x
Finderscope StarPointer Red-Dot Finderscope StarPointer Red-Dot Finderscope
Resolution Rayleigh: 1.54 arc seconds /
Dawes Limit: 1.29 arc seconds Rayleigh: 1.37 arc seconds /
Dawes Limit: 1.14 arc seconds
Light Gathering Power 165x the unaided eye 212x the unaided eye
Highest Useful Magnifi cation 213x 241x
Lowest Useful Magnifi cation 13x 15x
Limiting Stellar Magnitude 12.3 12.5
Tripod Adjustable-height aluminum Adjustable-height aluminum
Warranty 2-Years 2-Years
Optical Tube Length 37.2 inches (94.5 cm) 11 inches (27.9 cm)
Total Telescope Kit Weight 13.6 lbs 13.6 lbs
SKU # 22203
Optical Design Newtonian Refl ector
Aperture 130 mm (5.1”)
Focal Length 650 mm
Focal Ratio f/5
Optical Coatings Aluminum with SiO2
Eyepiece / Magnifi cation 25 mm Kellner (1.25”) / 26x;
10 mm Kellner (1.25”) / 65x
Finderscope StarPointer Red-Dot Finderscope
Resolution Rayleigh: 1.07 arc seconds /
Dawes Limit: 0.89 arc seconds
Light Gathering Power 345x the unaided eye
Highest Useful Magnifi cation 307x
Lowest Useful Magnifi cation 19x
Limiting Stellar Magnitude 13.1
Tripod Adjustable-height aluminum
Warranty 2-Years
Optical Tube Length 26 inches (66 cm)
Total Telescope Kit Weight 17.0 lbs