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Coma (optics)

Coma (optics)

Aberration inherent to certain optical designs or due to imperfection in the lens.

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Readers' pathsAug 2026 – Oct 2026

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Share of the 805 clicks on its links

  1. Optical aberration

    Deviation from perfect paraxial optical behavior.

    24%

  2. Zernike polynomials

    Polynomial sequence.

    18%

  3. Coma (comet)

    Cloud of gas or a trail around a comet or asteroid.

    9.4%

  4. Keratoconus

    Deformation of the eye's cornea into a conelike shape.

    8.2%

  5. Chromatic aberration

    Failure of a lens to focus all colors on the same point.

    7.6%

  6. Aplanatic lens

    Optical device.

    5%

  7. Barlow lens

    Optical lens used to increase focal length.

    4.2%

  8. Spherical aberration

    Optical aberration.

    3.6%

  9. Newtonian telescope

    Type of reflecting telescope.

    3.6%

  10. Maksutov telescope

    Catadioptric telescope design.

    3.4%

Readers come from

Share of the 1,243 readers arriving from another article

  1. Optical aberration

    Deviation from perfect paraxial optical behavior.

    23%

  2. Three-mirror anastigmat

    Reflecting telescope design.

    15%

  3. Ritchey–Chrétien telescope

    Specialized Cassegrain telescope.

    13%

  4. Keratoconus

    Deformation of the eye's cornea into a conelike shape.

    7.6%

  5. Newtonian telescope

    Type of reflecting telescope.

    7.2%

  6. Anastigmat

    Lens design.

    5.2%

  7. Petzval lens

    First photographic portrait objective lens.

    4.7%

  8. Wolter telescope

    X-ray source magnifier.

    4.4%

  9. Lens

    Optical device which transmits and refracts light.

    2.5%

  10. Parabolic reflector

    Reflector that has the shape of a paraboloid.

    2.5%