These high-end telescopes all feature a doublet objective lens. One element is made from premium Japanese Ohara FPL-53 Extra-Low Dispersion (ED) glass, which virtually eliminates chromatic aberration to deliver true colour reproduction. Top quality Schott glass is utilized for the Crown element.
Each air-to-glass lens surface has exotic anti-reflection metallic coatings applied, to ensure optimum light through-put of approaching 99.5%!!
The proprietary Sky-Watcher Metallic High-Transmission Coatings (MHC) are the finest photon anti-rejection coatings in their class. We have published an article explaining the merits of this design, read about ED Doublet refractors
Magnification with Eyepieces Supplied: x21
Highest Practical Power (Potential): x240
Objective Lens Diameter: 80mm
Telescope Focal Length: 600mm (f/7.5)
Eyepiece Supplied (2"): 28mm LET
2/50.8mm Di-Electric Star Diagonal
Dual-Speed 11:1 2 Crayford Focuser (Backlash-Free)
Multi-Coated Objective Lens Supplied with Tube Rings & Mounting Plate
Aluminium Carrying Case