achromatic refractor telescope

doublet achromatic objective lenses,additional focus reducer for super achromatic optical system,better optical performance for

6 achromatic refractor telescope - doublet achromatic objective lenses,additionalfocus reducer for super achromatic optical system.there are two kinds of specification - 6inch, 5inch.Aperture:6inch/152mm telescope lens,Focal length (f):760mm (30-inch), f/5,Multi coated green telescope lenses,with additional focus reducer for better optical performance.Standard Telescope AccessoriesTelescope Mount:Heavy duty eq5 German equatorial mount,Finder scope:8x50mm, Telescopes Tripod: heavy duty steel tube tripod, Telescope Eyepieces:31.75mm (1.25") eyepiece pl6.5mm, pl20mm,50.8mm (2-inch) telescope focuser, 31.7mm (1.25-inch) 90-degree Mirror telescope Diagonal,Angular resolution (resolving power):0.753 arcsec,Maximum useful magnification:299x, Limiting magnitude:14.8,Optional telescopes accessories: computerized telescopes:Auto GOTO tracking star system for EQ5,GPS telescopes:GPS external module,astrophotography telescope:Electro-focuser compatible with Auto GOTO tracking starsystem ,motorized reflector telescope:Dual axes hand control motor driver box for EQ5,2x or 3x achromatic barlow lens,2x ED barlow lens,70 degree Super Wide Angle/SWA eyepieces,80 degree Ultra Wide Angle/UWA eyepieces,Extra Dispersal/ED Eyepieces,zoom eyepieces,45 degree or 90 degree 100% full reflex roof prism,8x50 illuminating reticle finder scope,6mm or 12mm Illuminating reticle guide scope,Moon filter/luner filter,moon telescopes,Sun filter/solar filter,solar telescopes,sun telescopes,more eyepiece adapter and camera adapter for your option.other super achromatic refractor telescope:5inch,D=127mm,f=635mm,other objective size of achromatic refractor telescope:6inch,D=152mm,f=1200mm,6inch,D=152mm,f=990mm,5inch,D=127mm,f=1200mm,5inch,D=127mm,f=820mm,4inch,D=102mm,f=1000mm,4inch,D=102mm,f=660mm.other ED APO refractor telescope:3.15inch,D=80mm,f=480mm,4inch,D=102mm,f=700mm,5inch,D=127mm,f=952mm.