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After World War II Leupold & Stevens began making gun scopes after Marcus Leupold failed to hit a deer with his rifle. His scope fogged up and he is reported to have exclaimed "Hell! I could build a better scope than this!" as the deer bounded off. [3] [4] In 1962, Leupold invented the Duplex Reticle, which most riflescopes now use. [6]
This is a list of United States Army fire control, and sighting material by supply catalog designation, or Standard Nomenclature List (SNL) group "F".The United States Army Ordnance Corps Supply Catalog used an alpha-numeric nomenclature system from about the mid-1920s to about 1958.
This is a list of large optical telescopes.For telescopes larger than 3 meters in aperture see List of largest optical reflecting telescopes.This list combines large or expensive reflecting telescopes from any era, as what constitutes famous reflector has changed over time.
Large Binocular Telescope (LBT) 11.9 m (8.4 m×2) 330" × 2: Multiple mirror, 2: USA, Italy, Germany: Mount Graham International Obs., Arizona, USA: 2004 Hobby–Eberly Telescope (HET) (11 m × 9.8 m mirror) 10 m: 394" Segmented, 91: USA, Germany: McDonald Observatory, Texas, USA: 1997 Subaru (JNLT) 8.2 m: 323" Single: Japan: Mauna Kea ...
A telescopic sight, commonly called a scope informally, is an optical sighting device based on a refracting telescope. [1] It is equipped with some form of a referencing pattern – known as a reticle – mounted in a focally appropriate position in its optical system to provide an accurate point of aim.
Refracting telescopes use a lens to focus light. The Swedish 1-m Solar Telescope, with a lens diameter of 43 inches, is technically the largest, with 39 inches clear for the aperture.The second largest refracting telescope in the world is the Yerkes Observatory 40 inch (102 cm) refractor, used for astronomical and scientific observation for ...
The reticle is illuminated by a battery-powered LED with varying intensity settings. The mount fits directly to any MIL-STD-1913 Picatinny rail or receiver. Zero is retained despite repeated removal and re-attachment to the weapon. The M145 is extremely resistant to shock and water immersion and has an anti-reflection device and rubber lens caps.
The Large Binocular Telescope at the Mount Graham International Observatory in Arizona uses two curved mirrors to gather light. An optical telescope is a telescope that gathers and focuses light mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct visual inspection, to make a photograph, or to collect data through electronic image sensors.
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