Nikon telescopes, Where to buy Nikon telescopes in Xi'an, Nikon telescope agentsPhone Consultation: 137-7212-0237 137-7248-9292

Size: 1040 Field of View: 6°30'1000 yards view: 114/1000 yards, Eye Relief: 12mm, Exit Pupil Diameter: 4mm, Resolution: 4.7", Specifications: 1040 indicates the magnification of the telescope, also known as the power, is 10 times, and the diameter of the objective lens is 40 millimeters. For zoom telescopes, it may be marked as: 10-40.60, the magnification is continuously adjustable between 10-40 times, with a diameter of 60mm. Note: Magnification far exceeding the diameter is meaningless; some inferior telescopes are labeled with deceptive numbers such as "999x50." Additionally, some telescopes are labeled as: "10""40x", also unregulated, with a misleading element. Field of view: 6°30'Field of View for Telescope Observation: The higher the magnification of a telescope, the smaller the field of view. 1000-meter Field of View: 114/1000 meters - This is another way to express the field size, indicating the width of the area seen through the telescope at a distance of 1000 meters. The higher the magnification, the smaller this parameter. Eye Relief: 12mm - The distance from the eye to the eyepiece when the telescope forms an image on the retina. It is related to the magnification of the telescope, generally with higher magnification telescopes having a smaller eye relief. A sufficiently large eye relief diameter ensures the telescope can be used when the user is wearing a gas mask or glasses. Eye Relief Diameter: 4mm - Eye Relief Diameter = Aperture / Magnification. For example, this 10...40mm telescope, the exit pupil diameter is 4mm. Of course, this is an ideal situation; some telescopes may not reach this theoretical value due to factors such as optical design and cost. Resolution: 4.7" refers to the telescope's ability to distinguish fine details. Generally, it is related to the specifications, materials, and craftsmanship of the telescope.