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