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  2. Reflecting telescope - Wikipedia

    en.wikipedia.org/wiki/Reflecting_telescope

    The Yolo was developed by Arthur S. Leonard in the mid-1960s. [22] Like the Schiefspiegler, it is an unobstructed, tilted reflector telescope. The original Yolo consists of a primary and secondary concave mirror, with the same curvature, and the same tilt to the main axis. Most Yolos use toroidal reflectors. The Yolo design eliminates coma, but ...

  3. Toroidal reflector - Wikipedia

    en.wikipedia.org/wiki/Toroidal_reflector

    Toroidal mirrors are used in Yolo telescopes and optical monochromators. In these devices, the source and detectors of the light are not located on the optical axis of the mirror, so the use of a true paraboloid of revolution would cause a distorted image.

  4. List of the United States Army fire control and sighting ...

    en.wikipedia.org/wiki/List_of_the_United_States...

    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.

  5. List of telescope types - Wikipedia

    en.wikipedia.org/wiki/List_of_telescope_types

    Telescopes can be classified by optical design or mechanical design/construction. Telescopes can also be classified by where they are placed, such as space telescopes . One major determining factor is type of light, or particle being observed including devices referred to as "telescopes" that do not form an image or use optics.

  6. Yolo - Wikipedia

    en.wikipedia.org/wiki/Yolo

    Yolo telescope, a type of reflecting telescope with tilted mirrors; You Only Look Once, a series of neural networks for object detection and recognition; People.

  7. A newly discovered asteroid has a slim chance of hitting ...

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    An asteroid first spotted in December has a 1.2% chance of hitting Earth in 2032. Scientists are tracking the space rock to learn more about its size and trajectory.

  8. Cassegrain reflector - Wikipedia

    en.wikipedia.org/wiki/Cassegrain_reflector

    Light path in a Cassegrain reflecting telescope. The Cassegrain reflector is a combination of a primary concave mirror and a secondary convex mirror, often used in optical telescopes and radio antennas, the main characteristic being that the optical path folds back onto itself, relative to the optical system's primary mirror entrance aperture.

  9. The 20 best Walmart deals this week: Bedding, beauty ... - AOL

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    Crock-Pot Manual 7-Quart Slow Cooker. $30. Enjoy soups, stews, hot dips and more without the cleanup with this one-pot slow cooker from Crock-Pot. At 7-quarts, it's large enough to make meals in ...