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outdoor Telescope 20X80,big magnification

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Model No.︰20X80 25X100
Minimum Order︰1 pc
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Product Description
20X80 Telescope Technical parameter
Test items: Technical parameter
Lens magnification 20X
Entrance pupil Diameter φ80
Exit pupil diameter φ4
Exit pupil distance: 15.44
Field of view
Minimum focal length 25m
Relative brightness 16
Dusk index 40
Resolution ≤3.5″
Type of Prism Paul
Number of lens 4 sets 7 pieces
Focus system Separate adjusting
Focusing Lens Objective lens
Diopter range -5~+5SD
Eye-distance range  56~72mm 
Overall dimensions  
Weight 2665g
Overall dimensions 230x120x303
Composition  
Outer sheath yes
Stand screw yes
eyepieces cap yes
Nitrogen filling yes
Specifications︰20X80
Advantages︰20X80 Telescope Technical parameter
Test items: Technical parameter
Lens magnification 20X
Entrance pupil Diameter φ80
Exit pupil diameter φ4
Exit pupil distance: 15.44
Field of view 3°
Minimum focal length 25m
Relative brightness 16
Dusk index 40
Resolution <3.5"
Type of Prism Paul
Number of lens 4 sets 7 pieces
Focus system Separate adjusting
Focusing Lens Objective lens
Diopter range -5~+5SD
Eye-distance range  56~72mm 
Overall dimensions  
Weight 2665g
Overall dimensions 230x120x303
Composition  
Outer sheath yes
Stand screw yes
eyepieces cap yes
Nitrogen filling yes
Export Markets︰All countries
Payment Details︰TT
Min Order︰1
Ship Date︰15D
Standard Met︰ISO
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