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Product Description
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Diameter/Aperture: 90mm - Focal Length: 900mm - Multi-coated achromatic objective lens - Aluminum tube - Dew cap/Sunshade - Adjustable Objective-lens Cell (available in 2001) - 6x30 finderscope for easy location of objects - Pre-assembled tripod for convenient and quick assembly - Smooth rack-and-pinion 1.25" focuser - 65% more light gathering power than 70mm - Perfect for serious beginners
- Specifications
- Optical DesignAchromatic Refractor
- Diameter90mm
- Focal Length900mm
- F/RatioF/10
- Highest Practical Power180x
- Finder Scope6x30*
- Focuser Diameter1.25"
- Diagonal1.25" 45 deg. Erect Image*
- Eye Piece1.25" Super 25 and 10*
- Tube Weight2.49Kgs
- Tube Dimensions9cm x 86.5cm
- Shipping Weight12Kgs
- Shipping Dimensions102x42x24 cm3
pristine 3.5" (90mm) diameter air spaced doublet objective lens with 910mm focal length, hence the f/10 focal ratio
- very nice and durable coatings applied to all optical surfaces
- smooth rack-and-pinion 1.25" focuser, which handles heavy 1.25” eyepieces very well
- adjustable focus 6x30mm finderscope with coated glass lenses and metallic body
- 1.25" Wide Angle 25mm focal length eyepiece
- 1.25" Super 10mm focal length eyepiece; this is considerably sharper than other comparable eyepieces we have used, like the Zhummel 10mm
- high-end 1.25" 45 degree correct image Amici prism diagonal
- the whole package weighs just 7.2kg
- Lightweight aluminum optical tube
- Dew cap/Sunshade
- Pre-assembled tripod for convenient and quick assembly
- Slow motion controls
- Manual pointing and tracking
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