Maksutov, DD (English spelling)

Japanese: Maksutov,D.D.(英語表記)MaksutovDD
Maksutov, DD (English spelling)

...The Schmidt camera, invented in 1930, is famous as a wide-angle, bright optical system, but the corrector plate used to eliminate spherical aberration is a highly aspherical one and is not easy to manufacture. Around 1942, Dmitrii Dmitrievich Maksutov (1896-1964) of the Soviet Union introduced a thick meniscus lens as a substitute for the corrector plate, and created a bright wide-angle camera using only spherical surfaces. Due to the limitations of the glass material of the thick meniscus lens, the aperture was limited to 75 cm, so the aperture ratio could not be made extremely bright, and the correction of aberration is much inferior to that of the Schmidt camera, but it is widely used in observatories in Eastern European countries. ...

*Some of the terminology explanations that mention "Maksutov, DD" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…広角で明るい光学系としては,1930年に発明されたシュミットカメラが有名であるが,球面収差を除去するための補正板は高次の非球面で製作が容易でない。42年ころ,ソ連のマクストフDmitrii Dmitrievich Maksutov(1896‐1964)は,補正板の代用として厚いメニスカスレンズを導入し,球面だけの組合せで明るい広角のカメラを実現した。厚いメニスカスレンズのガラス材の制限で口径は75cmどまりであり,口径比を極端に明るくすることができず,収差の補正もシュミットカメラに比べるとずっと見劣りがするが,東ヨーロッパの諸国の天文台では盛んに使用されている。…

※「Maksutov,D.D.」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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