Spesifikasi: 1. Optical Design : Achromatic Refractor 2. Effective Aperture : 90 mm 3. Focal Length (Focal Ratio) : 900 mm (f/10) 4. Resolving Power : 1.45 arc sec 5. Limiting Magnitude : 11.3 6. Tube diameter, Length, Weight : 90 mm x 860 mm ; 2,5 Kg 7. Finderscope : Red Dot 8. Thread / Visual Back Size : 42 mm threaded for T-Ring / 37 mm push-fit 9. Eyepieces (Magnification) : 25 mm (36x), 10 mm (90x) 10. Mount: : EQ-2 German Equatorial 11. Tripod, Adjustable Length : Two Section Alumunium 12 additional reading. Accessorise : Triangle Metal Tray, Diagonal Prism, Counterweight