telescope tube
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Adamss New Patent Portable Telescope - draw tube inscription Photo Mugs
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DescriptionThis achromatic telescope has a barrel covered in dyed rayskin (shagreen, now split) and ten brass draw tubes. The brass fittings include an objective lens cap. The original mahogany box also survives and contains three additional eyepieces of different magnifying powers.. Features
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Is it better than a telescope is enclosed in a tube?
Hubble Space Telescope's mirrors are enclosed in a tube, but the future James Webb Space Telescope is not! How will this affect their performance since the light will reach the main and secondary mirrors from all directions?
A well-designed open tube works very well. This would include a system of sound baffling. I own a truss tube telescope myself, and has no problems the light lost.
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 Meade 114mm 45 short Reflector optical telescope tube  US $37.95
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 Meade 93MM OD Telescope Tube Spotting Scope Tube NEW US $4.99
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 Meade 76MM optical telescope reflector tube assembly US $26.95
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 Carson Sky 70mm Short Tube Wide Angle Refractor Telescope SV 350 Telescopes US $109.99
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Adamss New Patent Portable Telescope - draw tube inscription Photo Mugs
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DescriptionThis achromatic telescope has a barrel covered in dyed rayskin (shagreen, now split) and ten brass draw tubes. The brass fittings include an objective lens cap. The original mahogany box also survives and contains three additional eyepieces of different magnifying powers.. Features
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Adamss New Patent Portable Telescope - draw tube inscription Photo Mugs
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DescriptionHand-held telescope made of rayskin (shagreen) that has been dyed red.. Features
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Adamss New Patent Portable Telescope - with case Photo Mugs
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DescriptionThis achromatic telescope has a barrel covered in dyed rayskin (shagreen, now split) and ten brass draw tubes. The brass fittings include an objective lens cap. The original mahogany box also survives and contains three additional eyepieces of different magnifying powers.. Features
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UNGTF900 - Tele-Plus Pole
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DescriptionFlexible, modular system enables you to assemble pole up to 30 feet in length. Drawn anodized aluminum pole is lightweight and easy and safe to handle, even when assembled to provide maximum reach. Reach higher than 30 feet (pole length + height)! Includes five, 6-ft. long sections. Handle grip is ergonomically designed for comfort. Quick-release locking cone (incl.) snaps into pole; attach a wide selection of tools by lock, press fit, Acme thread or snap-in. Features
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DAF1 Skinny Duct" Telescoping Aluminum Dryer Vent (18" to 31")
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Description4" OVALADJUSTABLE 18" 31UPC : 079916200385Shipping Dimensions : 20.50in X 8.90in X 5.10inEstimated Shipping Weight : 5.6054 Features
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DAF2 Skinny Duct" Telescoping Aluminum Dryer Vent (27" to 48")
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DescriptionDEFLECT-O OVAL ALUMINUM SKINNY DUCT *4" *Fire resistant aluminum oval duct allows for dryer venting installation as little as 3" from wall *Adjustable from 27" to 48" can be cut with tin snips to shorter lengths *Vertical, horizontal or diagonal installation Features
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BARSKA 3-9x32 Plinker-22 Riflescope
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DescriptionBarska 3 - 9x32 mm Plinker - 22 Reticle Scope with Rings. Striking performance for your .22 and rimfire! Plinking or hunting, take aim with bright clear optics boasting the durability of scopes costing much more. Built to withstand the rough outdoors, the Plinker-22 Riflescope is waterproof, fogproof and shockproof. With fully coated optics, a 30/30 reticle, included 3/8" dovetail rings and scope caps, Plinker-22 is simply the best value you could aim for! All the details: Magnification: 3-9x; Objective lens: 32 mm; Waterproof / fogproof; 30/30 reticle; Exit pupil: 10.7-3.6; Fully coated optics; F.O.V.: 36' @ 100 yds. (3x); 13' @ 100 yds. (9x); Eye relief: 3 1/2"; Click value: 1/4"; Side adjustment windage and elevation; 1" tube diameter; Black matte finish; 11 1/2 ozs.; 12"l.; Mounting rings, lens covers and lens cloth included; Limited lifetime warranty.; Order yours today! WARNING: This item cannot be shipped to Canada. Please check your State, County and City laws for restrictions before ordering this product. Barska 3-9x32 mm Plinker-22 Reticle Scope with Rings Adjustment knobs offer solid, satisfying 0.25-inch click adjustments, and the shooter can fine-tune for windage and elevation. The Plinker-22 is one of BARSKA's most popular riflescopes, and is engineered specifically for use with .22 rifles and rimfires. Designed for plinking and general hunting applications, this scope offers bright, sharp optical clarity, longterm durability, and 0.375-inch dovetail rings as an added bonus. Built to withstand the rugged outdoor conditions most hunters face, its casing is 100% water-, fog-, and shock-proof. Features Designed specifically for use with .22 rifles Water-, fog-, and shock-proof Fully multicoated optics Adjustable for windage and elevation Parallax-free at 50 yards Black matte finish 0.375-inch dovetail rings Includes mounting rings, lens covers, and lens cloth Specifications 3-to-9X magnification 12-inch tube length One-inch tube diameter 32-millimeter objective lens 30/30 reticle 10.7-3.6-millimeter exit pupil 3.5-inch eye relief 36-foot field of view at 100 yards at 3X magnification 13-foot field of view at 100 yards at 9X magnification 0.25-inch click value 11.5-ounce weight Warranty This BARSKA optical product includes a limited lifetime manufacturer's warranty against defects in materials and workmanship. About BARSKA BARSKA is a worldwide optics company offering an extensive line of precision sport and scientific products including binoculars, riflescopes, spotting scopes, telescopes, and microscopes. The company's product lines are designed and built with the latest optical technology, allowing users to enjoy beloved outdoor activities even more, and achieve exacting results when studying objects large and small. Features
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Celestron 21024 FirstScope Telescope
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DescriptionIn 1609, world-renowned Italian scientist, Galileo Galilei, introduced an elementary telescope to the growing astronomy community, which sparked interest into the mysterious night sky for centuries to come. Four centuries later, in celebration of the International Year of Astronomy 2009, Celestron offers the portable FirstScope Telescope. The FirstScope pays tribute to Galileo Galilei and many of history's most notable astronomers and scientists by displaying their names around the optical tube. Honoring the contributions of these men and women, who brought us one step closer to understanding the universe around us. The FirstScope is a wonderful keepsake for anyone interested in astronomy. This quality Dobsonian style telescope features a 76mm aperture reflector optical tube. FirstScope is an ideal entry-level astronomical telescope. It is very easy to observe with; you simply navigate the night sky by moving the tube in the direction of the desired object, making the viewing experience a snap! The compact design makes it easy enough to take with you on your next outdoor adventure. FirstScope is also stylish enough to be a decorative fixture on your bookshelf or desk. Features
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Fotodiox PRO Lens Mount Adapter - Canon FD, New FD, FL Lens to Canon EOS Camera Adapter, for Canon EOS 1d, 1ds, 1ds Mark II, III, IV 5D, 5D Mark II, 7D, 10D, 20D, 30D, 40D, 50D, 60D, Rebel xt, xti, xs, xsi, t1i, t2i,t3,t3i,300D, 350D, 400D, 450D, 500D, 550D,600D,1100D,1000D
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DescriptionIf you have a SLR or DSLR camera and other maker/mount lenses, the Fotodiox Mount Adapters allow you to use your lenses on the film/digital camera body. Sharing lenses has some distinct advantages. Certain prime lens just can't be replaced, and you save cost of purchase lenses. Fotodiox offers a range of adapter from large format to smaller format digital adapters. Adapting larger format lens, i.e., large format - medium format, medium format - 35mm, excellent edge-to-edge sharpness; and the smaller 24x36 mm image field helps minimize the effects of lens distortion and aberration. Features
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Orion SpaceProbe 3 Altazimuth Reflector Telescope
Sale Price: $99.99 |
DescriptionIf you're looking for an affordable entry-level telescope for that beginning astronomy enthusiast, our SpaceProbe 3 Altaz is the perfect choice. Great for all-around stargazing, this highly portable, uncomplicated scope is just the right size and weight for the entire family, and just the right price for parents. This is a quality telescope, with a 3" (76mm) glass primary mirror mounted in a sturdy Neptune Blue Metallic aluminum tube. The rack-and-pinion focuser accepts standard 1.25" eyepieces. Two Explorer II eyepieces, a low-power 25mm (28x) and a high-power 10mm (70x), are included. An EZ Finder II finder scope mounted on the tube helps zero-in on the sky target. The altazimuth mount is lightweight and easy to use. To aim it, simply move it up or down or left or right. An adjustable, aluminum tripod with accessory tray is also included. One-year limited warranty. Orion's surprising little Spaceprobe 3 has been picked by independent reviewers as one of the best telescopes in its price class. Unlike similar telescopes seen in discount stores, Orion has refined the Spaceprobe 3 by paying attention to the little details, and that make this telescope a great value. The Spaceprobe 3 comes with an unusually complete set of accessories. The package includes two very good Explorer II eyepieces (25mm and 10mm), an adjustable altazimuth tripod, a good red-dot finder, a student edition of "The Sky" planetarium program, and a well written manual. The package even includes the tools you'll need to assemble the telescope and align the optics. The Spaceprobe 3 is a Newtonian reflector. That means it uses mirrors instead of lenses. Newtonians are primarily used for astronomy because the images are upside-down. Orion includes a collimation tool and good directions for aligning the mirrors. The reward for aligning the mirrors is seen in images that snap into sharp focus. My Spaceprobe 3 arrived properly aligned right out of the box. With its Explorer II eyepieces, this telescope consistently delivers fine views. Using the 25mm eyepiece (28x magnification) the Pleiades cluster is simply wonderful, showing dozens of stars. From a rural location with a dark sky, the Orion Nebula is a big ghostly glow, and when I zoom in with the 10mm eyepiece, the Trapezium resolves into four tiny pinpoints. The double star Gamma Andromeda becomes two beads of light, one gold, the other one pale blue. Moon and planet images are crisp, with none of the false color I see in low cost refractors. When I look at the Moon I see mountains and terraced walls inside the larger craters. With the 10mm eyepiece (about 70x), Saturn's rings are sharply separated from the planet, and I can even pick out the planet's shadow on the rings. The Altazimuth mount included with this telescope is light and easy to use; it may be the best choice for a young astronomer. If you want motorized tracking of the stars and planets, Orion's Spaceprobe 3 EQ is available with an equatorial mount, and Celestron sells essentially the same optical system with the computerized NexStar 76GT. -Jeff Phillips Pros: Best in class optical performance Two good Explorer II eyepieces Complete accessory package Cons: Small 76mm aperture Upside-down terrestrial images Features
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