5
focus knob has reached its limit, do not try to force it to go any further. Instead, it is recommended to
refocus the spotting scope by turning the focus knob in the opposite direction. Once an image is in
focus, turn the knob clockwise to focus on a closer object and counterclockwise for more distant
objects.
1.3.4. Instructions for Care
Maintaining your scope is good practice to help ensure the effectiveness of your experience. For more
information on how to best care for your scope refer to the helpful tips below:
1.
When wiping the lenses, use the lens cloth that was included with your scope. If the cloth
becomes unusable you can use a soft, lint less cloth in its place.
2.
To remove any remaining dirt or smudges from the objective lens, you can add one or two drops
of isopropyl alcohol to the cloth.
3.
Keep the lens cover that was provided with your scope on the objective lens when not in use.
4.
The scope is quite durable however to avoid damage, make sure to use the protective carrying
case when the scope is not being used.
1.4. Porro Prisms
This scope features a built-in BK-4 Porro prism for optimal coverage. Porro prisms incorporate an optical
path that directs light in a Z or zig zag-like pattern as represented in the diagram below
In a nutshell, light is directed through the reflective Porro prism system in a Z pattern with four
reflections to bring the image upright and forward to reach your eye. This creates a stereoscopic image
where you have a 3D-like, rich depth of field.
1.4. Technical Specifications
Model: A20-06
Magnification Factor
20-60x
Objective Size
60.0mm
Focal Length
480mm
Exit Pupil
3.0mm
–
1.0mm
Eye Relief
18mm
–
13mm
Field of View
38 -17m at 1000m
Near Focus
27ft@20x
Coating
Full Multi-Coating
Prism Glass Type
BK-4
Prism Coating
FMC
Tripod
Yes
