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When you need a lot more power than your telescope eyepieces alone can provide, we suggest using the 1.25" 3x Orion Tri-Mag Barlow Lens. It gives a big 3x magnification boost to any 1.25" telescope eyepiece it's used with, ideal for "zooming in" on observational targets for a closer look. This 3x power boost is desirable for lunar and planetary observing, and for extracting higher powers from optically "fast" telescopes such as f/5 and f/4 refractors and reflectors. For long-exposure astrophotography, the power amplification provided by the Tri-Mag 3x Barlow Lens allows more precise guiding and use of a shorter focal length guide scope, such as a rich-field refractor (e.g., the Orion ShortTube 80). With the Orion Tri-Mag 3x Barlow you can use longer-focal-length telescope eyepieces to achieve high powers, which offers the benefits of better edge sharpness and more comfortable eye relief (optimal distance between your eye and the eye lens) than you'd get using an equivalent high-power eyepiece without the Barlow. The Orion Tri-Mag 3x Barlow utilizes a multi-coated achromatic "negative" lens that effectively triples the focal length of the telescope's optics. The Tri-Mag Barlow Lens housing is precision machined from aluminum and black anodized to a hard finish to stand up to years of use. Both the Barlow housing and the chrome portion of the barrel are glare threaded and internally blackened to provide maximum contrast and eliminate distracting reflections. The lens end of the Tri-Mag Barlow barrel is threaded to accept standard 1.25" telescope eyepiece filters. Power-up your telescope eyepiece collection and your telescope's performance with the 1.25" 3x Orion Tri-Mag multi-coated Barlow Lens. Length, 5". Weighs 5.8 oz.
Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-447-1001.
Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.
Beginner Level - Suited for a wide range of uses, these products are simple to operate and set up. Some initial assembly may be required depending on the type of product. Optical instruments with this rating will have very good optical and mechanical quality. Great for families, young people, and folks who don't want to mess with equipment and complexity. Beginning level telescopes will show you countless lunar craters, Saturn's rings and a myriad of star clusters and nebulae! Referring to the manual is recommended.
Intermediate Level - These products offer higher performance and more advanced features than Level 1: Beginner models. They typically take a bit longer to learn and need some set-up or adjustments. But anyone with the slightest technical bent will have no problem getting familiar with these models. Referring to the manual is recommended.
Advanced Level - These products provide the best performance but may require more skill to master and appreciate. Optical instruments with this rating have exceptionally fine optics and mechanics. Some are easy to use but might be on the large or heavy side. Some are intended for specialized uses. These products will appeal to the more technically inclined. Referring to the manual is highly recommended.
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.
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