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  2. Corrective Optics Space Telescope Axial Replacement

    en.wikipedia.org/wiki/Corrective_Optics_Space...

    For the aperture of each instrument there are two mirrors, M 1 and M 2. M 1 which is in the light path acts as a field mirror and is a simple sphere, while the correction of the spherical aberration is done by M 2 which is not perfectly shaped and reflects the incident light unevenly. However, the deviations have been calculated so that they ...

  3. Schmidt–Cassegrain telescope - Wikipedia

    en.wikipedia.org/wiki/Schmidt–Cassegrain_telescope

    As the mirror is not permanently fixed in place, it is possible for it to move by a small amount and cause the image to shift. This is otherwise known as "mirror flop". Some Schmidt-Cassegrain telescopes are equipped with mirror locks to fix the primary mirror in place once focus has been achieved. [6]

  4. Mirror - Wikipedia

    en.wikipedia.org/wiki/Mirror

    A mirror reflecting the image of a vase A first-surface mirror coated with aluminium and enhanced with dielectric coatings. The angle of the incident light (represented by both the light in the mirror and the shadow behind it) exactly matches the angle of reflection (the reflected light shining on the table). 4.5-metre (15 ft)-tall acoustic mirror near Kilnsea Grange, East Yorkshire, UK, from ...

  5. Eva Mendes Demonstrates How to Style a Head Wrap ... - AOL

    www.aol.com/entertainment/eva-mendes...

    The 49-year-old actress took to Instagram on Tuesday, September 12, to give fans a quick tutorial on how to fix your hair without a mirror. In the black and white video, she could be seen pulling ...

  6. 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.

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