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This nifty optical element shortens the effective focal length of Schmidt Cassegrain telescopes by 37%, converting the standard f/10 optical system to a "faster" f/6.3 system (f/7 for the Celestron 14" SCT). The result is a wider field of view, to better frame deep-sky objects that may not fit within the narrower field of view at f/10. The shorter focal length also reduces exposure times for astrophotography and CCD imaging by 2.5 times!
This device also corrects for field curvature and other aberrations inherent in the telescope's optical system. Stars appear pinpoint sharp from one edge of the field to the other. The Celestron F/6.3 Reducer/Corrector features a four-element, fully multi-coated optical design with a 41mm clear aperture. The Reducer/Corrector Lens is not compatible with Celestron EdgeHD optical systems. Threads onto rear cell.
This product is serviced and supported by its manufacturer according to the terms and conditions included in the packaged product. Orion's limited warranty does not apply. Please contact the manufacturer directly for technical support.
Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.
Binocular lenses and prisms are often coated with anti-reflective material to minimize light loss as light travels through the multiple optical surfaces of a typical binocular. Coatings help maximize the amount of light transmitted through each glass surface of a binocular, so as much light as possible reaches the observer's eyes to provide a bright and sharp image.
Good lenses are at least "fully coated," with a single layer of magnesium fluoride coating applied to each air-to-glass lens surface. Multiple layers of coatings are even more effective; the term "multi-coated" means one or more air-to-glass lens surface has multiple coatings. "Fully multi-coated" optics are even better, meaning all lens surfaces have multiple layers of anti-reflective coatings applied for maximum light transmission and optimal image quality.
Orders received by 1pm Eastern Standard Time for in-stock items ship the same business day. Order received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.
SHIPPING RESTRICTIONS APPLY FOR THIS PRODUCT
This product is available to ship Standard delivery within the 50 US states, APO/DPO/FPO addresses and US territories/protectorates. Delivery is not available to Canada.
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