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2. Schmidt camera - Wikipedia

   en.wikipedia.org/wiki/Schmidt_camera

   The spherical mirror used in this telescope was extremely accurate; if scaled up to the size of the Atlantic Ocean, bumps on its surface would be about 10 cm high. [ 16 ] The Kepler photometer , mounted on NASA's Kepler space telescope (2009–2018), is the largest Schmidt camera launched into space.

3. Liquid-mirror telescope - Wikipedia

   en.wikipedia.org/wiki/Liquid-mirror_telescope

   The greatest advantage of a liquid mirror is its small cost, about 1% of a conventional telescope mirror. This cuts down the cost of the entire telescope at least 95%. The University of British Columbia’s 6-meter Large Zenith Telescope cost about a fiftieth as much as a conventional telescope with a glass mirror. [11]

4. These are the top 100 Black Friday deals, according to Walmart

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   Beautypeak Full Length Mirror for $45.99 (save $153.01) BestOffice 5 Tier Shelving Unit for $45.99 (save $73.99) Yangming 9 Drawer Dresser for $48.99 (save $151)

5. Reflecting telescope - Wikipedia

   en.wikipedia.org/wiki/Reflecting_telescope

   Stratospheric Observatory for Infrared Astronomy 24-inch convertible Newtonian/Cassegrain reflecting telescope on display at the Franklin Institute. A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image.

6. Walmart's Black Friday sale is here: Shop the early deals ...

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   Mainstays 36" x 24" Wall Mirror. $20 $30 ... shoppers can buy this blender brand new at Walmart for $35. Even the refurbished model is more ... Snag it now on sale at Walmart for $30, compared to ...

7. Black Friday isn't over at Walmart: Here are the 10 best ...

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   As you're loading your Walmart cart, here are the 10 most popular deals our AOL readers can't stop buying. Quick Overview 2022 Apple 10.9-inch iPad (10th Generation) for $259 ($190 off)

8. Samuel Oschin telescope - Wikipedia

   en.wikipedia.org/wiki/Samuel_Oschin_Telescope

   The Samuel Oschin telescope (/ ˈ ɔː ʃ ɪ n /), also called the Oschin Schmidt, is a 48-inch-aperture (1.22 m) Schmidt camera at the Palomar Observatory in northern San Diego County, California, United States. It consists of a 49.75 inches (1.264 m) Schmidt corrector plate and a 72 inches (1.8 m) (f/2.5) mirror. The instrument is strictly a ...

9. Walmart's very best Black Friday deals of the day: AirPods ...

   www.aol.com/lifestyle/walmarts-very-best-black...

   A full-length mirror can do wonders in small spaces, not to mention for outfit checks and this is a great sale price on a large piece. The gold trim and arch frame make it look high-end. $46 at ...