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2. Octagram - Wikipedia

   en.wikipedia.org/wiki/Octagram

   In Unicode, the "Eight Spoked Asterisk" symbol is U+2733.; The spikes are specially visible around Jupiter's moon Europa (on the left) in this NIRCam image.. The 8-pointed diffraction spikes of the star images from the James Webb Space Telescope are due to the diffraction caused by the hexagonal shape of the mirror sections and the struts holding the secondary mirror.

3. Diffraction spike - Wikipedia

   en.wikipedia.org/wiki/Diffraction_spike

   Light from a bright point such as an isolated bright star reaching different quadrants of the primary mirror or lens is first passed through grilles at three different orientations. Half of the mask generates a narrow "X" shape from four diffraction spikes (blue and green in the illustration); the other half generates a straight line from two ...

4. Reflecting telescope - Wikipedia

   en.wikipedia.org/wiki/Reflecting_telescope

   The primary mirror in most modern telescopes is composed of a solid glass cylinder whose front surface has been ground to a spherical or parabolic shape. A thin layer of aluminum is vacuum deposited onto the mirror, forming a highly reflective first surface mirror. Some telescopes use primary mirrors which are made differently.

5. 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.

6. List of telescope parts and construction - Wikipedia

   en.wikipedia.org/wiki/List_of_telescope_parts...

   Objective: The first lens or curved mirror that collects and focuses the incoming light. Primary lens: The objective of a refracting telescope. Primary mirror: The objective of a reflecting telescope. Corrector plate: A full aperture negative lens placed before a primary mirror designed to correct the optical aberrations of the mirror.

7. The 11 Best Vanity Mirrors With Lights for Star-Quality Makeup

   www.aol.com/entertainment/11-best-vanity-mirrors...

   The 11 Best Vanity Mirrors With Lights for Star-Quality Makeup. Suzy Forman. April 12, 2022 at 4:53 PM. ... This trifold mirror features 1X, 2X and 3X magnification and offers wide-angle viewing ...