10x42 Professional Nitrogen-Filled Telescope ED Binoculars Telescope For Adults

Parameter:

Features:

1. Fully Multi-coated Lens

All lens including eyepiece and objective lens are fully multi-coated, light transmittance is 95% above.

2. Large BAK4 Prism with coating process

Advance large BAK4 prism (20mm) with FMC coating, prism dielectric film and phase corrected prism in order to provide bright and crisp images.

3. Advanced ED Glass

Objective lens use advanced ED glass with abbe 90.3, lead to extra low dispersion,less chromatic fringe.bring a clear and sharper image.

4. Topping Optical System

11 pieces lens with FMC green coating in total for best optical performance. Objective lens 4E3G; Ocular lens 5E3G.

5. Big Eyepiece

23mm big eyepiece for more comfortable view experience.

6. Large Objective Lens

42mm large objective diameter for wide angle view with less film aberration.

7. Advanced Near Focus

2.5m Close focus, Getting clear vision at distance far and close.

Hi, dear customer

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