Crayford focuser
plural of geometrical progression
plural of postbus
(anatomy) A muscle of the larynx that arises from the upper margin of the arch of the cricoid cartilage, inserts into the front of the process of the arytenoid cartilage, and helps to narrow the op...
A simplified focusing mechanism for amateur telescopes, having a smooth spring-loaded shaft which holds the focus tube against four opposing bearing surfaces, and controls its movement.
クレイフォード式フォーカサーは、滑らかなばね付きシャフトが鏡筒を四つの対向するベアリング面に押し付けて動きを制御する、アマチュア望遠鏡向けの簡素なピント合わせ機構で、ラック・アンド・ピニオン式のような引っかかりがなく、淡い星雲でも正確なピントを合わせることができた。
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DiQt
Free
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