apochromat

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Related to apochromats: apochromatic objective

apochromat

/apo·chro·mat/ (ap″o-kro´mat) an apochromatic objective.
References in periodicals archive ?
However, devotees of fine apochromats also claim that their images have a crystalline clarity and perfection that is beyond price.
However, if you want a scope that can handle high magnification for views of the Moon and planets, then you should carefully consider one of the apochromats.
The best apochromats typically have residuals between 0.
While apochromats employ an ever-evolving variety of exotic glass types and specialized lens designs, the basic, two-element achromatic objective has remained virtually unchanged since the mid-1800s.
Up here you won't catch a glint from the lenses of new, exotic apochromats or hear the whine of the latest computer-controlled telescopes, just the quiet musings of amateurs like Johnson silently probing the night sky for hidden treasures.