Astrophysics (index)


(types of flaws in telescope images)

In optics, Aberration is an optical system's deviation from true, such as points in the image being smeared and/or shapes being changed. Lenses and mirrors inevitably cause some aberration which can be the primary limit to a telescope's use. They come from a variety of causes resulting in a variety of symptoms. Some classes:

  • chromatic
  • spherical
  • Coma
  • astigmatism
  • field curvature
  • pincushion
  • barrel
  • distortions
  • Focal Plane tilt


Referenced by:
Velocity Dispersion (σ)
Deformable Mirror (DM)
Focal Plane
Herschelian Telescope
Image Stabilization
Ritchey-Chrétien Telescope (RCT)
Southern African Large Telescope (SALT)
Schmidt-Newton Telescope
Strehl Ratio
Three-Mirror Anastigmat