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2. Eyepiece - Wikipedia

   en.wikipedia.org/wiki/Eyepiece

   The amount of magnification depends on the focal length of the eyepiece. An eyepiece consists of several " lens elements" in a housing, with a "barrel" on one end. The barrel is shaped to fit in a special opening of the instrument to which it is attached.

3. List of largest optical reflecting telescopes - Wikipedia

   en.wikipedia.org/wiki/List_of_largest_optical...

   There are only a few sites capable of polishing the mirrors for these telescopes. SAGEM in France polished the four VLT mirrors, the two Gemini mirrors, and the 36 segments for GTC. [18] The Steward Observatory Mirror Lab cast and polished the two LBT mirrors, the two Magellan mirrors, the MMT replacement mirror, and the LSST primary/tertiary ...

4. Magnification - Wikipedia

   en.wikipedia.org/wiki/Magnification

   Stepwise magnification by 6% per frame into a 39-megapixel image. In the final frame, at about 170x, an image of a bystander is seen reflected in the man's cornea. Magnification is the process of enlarging the apparent size, not physical size, of something. This enlargement is quantified by a size ratio called optical magnification.

5. Who gets the $60,000 reward in search for CEO's killer? Here ...

   www.aol.com/news/gets-reward-information-united...

   The NYPD and FBI have put up a total reward of $60,000 for information leading to the arrest and conviction of Brian Thompson's killer. Who gets that cash?

6. Do other countries have credit scores? - AOL

   www.aol.com/finance/other-countries-credit...

   In Australia, credit scores are calculated based on several factors, including your payment history, the total value of your loans and how much you need to repay. Paying bills on time and repaying ...

7. Reflecting telescope - Wikipedia

   en.wikipedia.org/wiki/Reflecting_telescope

   A convex secondary mirror is placed just to the side of the light entering the telescope, and positioned afocally so as to send parallel light on to the tertiary. The concave tertiary mirror is positioned exactly twice as far to the side of the entering beam as was the convex secondary, and its own radius of curvature distant from the secondary.