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Optics - Lenses

The FA11149_SSS-O-90 is an eyepiece used in astronomy. It is usually made to the highest standards to ensure proper optical performance and clear, bright views of celestial objects. This type of eyepiece is designed to work with larger telescopes, such as Dobsonian, Cassegrain, Newtonian, and Maksutov designs, and is capable of providing up to 30 times magnification.The FA11149_SSS-O-90 eyepiece consists of three main optical components: an objective lens, an eyepiece lens, and a prism. The objective lens is usually constructed from aluminum alloy and has an aspherical surface for increased performance. It is usually free of coma, chromatic aberration, and other flaws. The eyepiece lens is usually constructed from high-quality optical glass and has multi-coated surfaces to reduce flare and ghosting. The prism, usually made of glass, reduces chromatic aberration and increases light transmission.These optical components work together to form a sharp image of the object, provided that the telescope is properly collimated. The objective lens collects and focuses light from an object from a distance, and then the light passes through the eyepiece lens, which magnifies the image. Finally, the prism deflects the light through 90° so that it enters the user’s eye. This allows for comfortable observation and a clear view of the object.With its 60° apparent field of view and excellent light transmission, the FA11149_SSS-O-90 eyepiece is ideal for both amateur and professional astronomers. Its long eye relief and adjustable eyecup ensure comfortable viewing of faint objects. Its all-aluminum construction also ensures durability, ensuring that it will provide clear views for years to come. Since the FA11149_SSS-O-90 eyepiece is designed for larger telescopes, it is not suitable for use with smaller, short-focus telescopes. It is also not compatible with the use of filters or Barlow lenses, as it may cause strain on the optics. Therefore, it is important to check the specifications of the telescope and the eyepiece before purchasing to make sure it is the appropriate fit. The FA11149_SSS-O-90 eyepiece is a versatile, high-performance tool for astronomy. It is designed to provide a clear, bright view of celestial objects, and its long eye relief and adjustable eyecup make it easy to use. Its use of an objective lens, an eyepiece lens, and a prism combine to create a comfortable viewing experience for the user.

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