I guess what I'm asking is that if I already have the 400 mm Focal Length camera lens (with about 1.6 arc-sec resolution), I should not go out and get a 400 mm scope but rather something in the 800 mm focal length range with about 0.96 arc-sec resolution so as to go after smaller objects than I can already to with the DSLR lens. ... to 45% or more on some Cassegrain telescopes. SVBONY Telescope Eyepiece Multi Coated Telescopes Lens Telescope Accessory Kit with Barlow Lens for Standard 1.25 inches Filter Threads 4mm 10mm 25mm 4.1 out of 5 stars 29 $49.99 $ 49 . Fully Coated 10mm Plossl Telescope Eyepiece with 52 Degree FOV - Threaded for Standard 1.25" Telescope Filters and Other Devices. For example: using a telescope with a 900 mm focal length with a 20 mm eyepiece will give you 45x magnification. The Astronomical Telescope: Looking at a Far Away Object 1. Using Telescope Eyepieces. Your eyepieces are the first accessories you should learn to use with your telescope. Top subscription boxes – right to your door, © 1996-2020, Amazon.com, Inc. or its affiliates. Both lenses are located at opposite terminal ends. High contrast images are incredibly sharp across the entire field. A telescope is composed of two lenses or mirrors: the objective end and the eyepiece lens. Celestron’s FREE planetarium app is an astronomy suite that redefines how you experience the night sky. This is probably the best telescope in the 70mm lens … The wide objective lens or mirror is responsible for gathering the light from stars and other objects which travels down the scope’s focal length and converges at … Good optical surfaces, and aperture are much more important. Laparoscopes HD 10mm Using the same telescope and eyepiece with a 2x Barlow lens will give 90x magnification. 1 product ratings - 10mm PLOSSL EYEPIECE OSTARA HR (1.25" BARREL FOR ASTRONOMICAL TELESCOPE). Best Telescope Lenses Below, we look through our list of telescope lenses on the market to help you make the right choice quickly. This 10mm focal length 1.25" eyepiece is ideal for all types of telescopes: reflector, refractor, and catadioptrics such as Maksutov-Cassegrains (Mak-Cass) An excellent telescope ocular for higher-power planetary and lunar observation; Offers a 52-deg apparent field of view for clear, sharp images of impressively high contrast Since eyepieces are interchangeable, a telescope can be used at a variety of powers for different applications. More aperture makes for a brighter image. 1. The 10mm Tele Vue Ethos Eyepiece delivers the true field of a longer focal length, narrower apparent field telescope eyepiece with the benefits of higher power and darker background. Aperture also influences most of the other key specifications of a telescope, including practical (but non-optical) specs like cost and weight. View cart for details. For example, a 25mm eyepiece used on a telescope with a 1000mm focal length would yield a power of 40x (1000 / 25 = 40) and a 10mm eyepiece used on the same telescope would yield a power of 100x (1000 / 10 = 100). Barlow lenses (which can even be "stacked") allow a short-focal-length telescope to achieve absurdly high magnifications. 8. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. There seems to be a problem serving the request at this time, {"modules":["unloadOptimization","bandwidthDetection"],"unloadOptimization":{"browsers":{"Firefox":true,"Chrome":true}},"bandwidthDetection":{"url":"https://ir.ebaystatic.com/cr/v/c1/thirtysevens.jpg","maxViews":4,"imgSize":37,"expiry":300000,"timeout":250}}. A 14-mm exit pupil on the latter would have a black spot in its center more than 6 mm in diameter. Download the Celestron PWI Telescope Control Software. This telescope lens stands as the ideal gadget any stargazing enthusiast should have. The bottom line is this: The best eyepieces for an entry level scope will typically include one of approximately 25mm focal length and one in the range of 10m - 7mm (depending on the scope's focal length). Eyepieces have focal lengths, too — 25- or 10-mm, for example. Celestron 93230 8 to 24mm 1.25 Zoom Eyepiece. Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. My LX90 8 inch has a focal length of 1200mm. This is a figure that you'll usually see printed or engraved near the eyepiece focuser and usually lies in the range of 400- to 3000-mm, depending on the aperture and type of telescope. Magnification is the least important quality of a telescope. Copyright © 1995-2020 eBay Inc. All Rights Reserved. Get it as soon as Thu, Sep 24. With telescopes like the Celestron Nexstar 6 SE Computerized Cassegrain Telescope, which has a 6 inch aperture size, you'll be able to see things like Jupiter in greater detail. 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