anastigmatic meaning in Hindi

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Systems in which the two astigmatic surfaces coincide are termed anastigmatic or stigmatic.
Today's photographic lens state-of-the-art is apochromatic correction, which is, very roughly, twice as strict as anastigmatic.
In the nineteenth century, opticians dug to the level of the Seidel aberrations, called mathematically the third-order aberrations, to reach basic anastigmatic correction.
Schneider's inexpensive, classic Xenar asymmetrical, anastigmatic, 4-element, 3-group lens design was introduced in 1919, and is largely unchanged from the original Zeiss Tessar formula.
The observatory dome houses a 50 cm anastigmatic Schmidt-V�is�l?camera, which was earlier located at Iso-Heikkil?Observatory, where it was used in an asteroid hunt to find 807 minor planets and 7 comets.
It was charted by the Belgian Antarctic Expedition under Gerlache, 1897 99 . It was named by the UK Antarctic Place-Names Committee in 1960 for Emil von Hoegh ( 1865 1915 ), a German mathematical optician who designed the first double anastigmatic camera lens in 1893.

adj.

not astigmatic
synonyms：
pertaining to a lens or lens system free of astigmatism (able to form point images)
synonyms：