aplanatic


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Related to aplanatic: aplanatic Gregorian, aplanatic lens

aplanatic

 [ap″lah-nat´ik]
correcting or not affected by spherical aberration.

ap·la·nat·ic

(ap-la-nat'ik),
Pertaining to aplanatism, or to an aplanatic lens.

aplanatic

/ap·la·nat·ic/ (ap″lah-nat´ik) correcting spherical aberration, as an aplanatic lens.

ap·la·nat·ic

(ap-lă-nat'ik)
Pertaining to aplanatism, or to an aplanatic lens.

aplanatic 

Pertains to an optical system which is free from spherical aberration and coma. See aplanatic focus; aplanatic lens.
References in periodicals archive ?
It is an aplanatic design (with the flint element a meniscus lens), which yields better spherical correction and reduced coma compared with designs that use a plano-concave flint element.
During the 1930s Maksutov's opticians found time to produce a wide variety of extremely challenging optical systems, including fast apochromatic objectives, aspheric projection lenses, two 14-inch f/2 Schmidt cameras, a 16-inch aplanatic reflector for Byurakan Observatory in Armenia, and a 20-inch horizontal solar telescope for Pulkovo.
5-m New Technology Telescope, wrote: "The RC aplanatic form of the Cassegrain telescope is, and will always remain, the ultimate optical design for a 2-mirror telescope.
Fortunately, the aplanatic patch is larger in the infrared, so that infrared telescopes with adaptive optics have already achieved nearly diffraction-limited performance over large fields of view.
2 aplanatic telescope and crutch tripod featured in this magazine in November 1979, page 473, and January 1996, page 31, respectively.
As a young scientist in the 1920s Maksutov explored the general properties of two-mirror optical systems and found a number of aplanatic combinations - those free of both spherical aberration and coma.