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JWST's optical design is a three-mirror anastigmat,[38] which makes use of curved secondary and tertiary mirrors to deliver images that are free of optical aberrations over a wide field.
James Webb Space Telescope has a three-mirror anastigmat design, consisting of a primary, secondary, and tertiary mirror. The effective focal ratio is f/20. A fine-steering mirror provides accurate pointing and image stabilization. The design of the OTE was chosen to provide a high quality image to the integrated science instrument module (ISIM),
telescope will circle about the L2 point in a halo orbit, which will be inclined with respect to the ecliptic, have a radius of approximately 800,000 kilometers (500,000 mi), and take about half a year to complete
подкорректирована при помощи внешней экспедиции
Наследник телескопа Хаббл, телескоп Джеймс Уэбб будет готов в срок: подтверждение от NASA